Radioactive waste treatment device and method

Abstract

The invention provides a radioactive waste treatment device and method, and relates to the technical field of radioactive waste treatment.The radioactive waste treatment device comprises a bottom frame, a vertical frame is fixedly installed at one end of the bottom frame, a pressurization assembly is installed on the vertical frame, and a separation cylinder is fixedly arranged on the bottom frame; two guide frames distributed in parallel are fixedly connected to the bottom of the bottom frame, a moving vehicle is arranged in the guide frames, a second motor is fixedly connected to the bottom of the moving vehicle, a moving vessel is rotatably arranged above the moving vehicle, and the moving vessel is fixedly connected with the output end of the second motor. The radioactive waste is compressed, solid-liquid-gas three-state separation is achieved in the process, separation is carried out in a relatively closed space, therefore, scattering of solid chippings or radioactive flying fog in air can be greatly reduced, and the treatment effect is greatly improved.

Description

Technical Field

[0001] This invention relates to the field of radioactive waste treatment technology, specifically to a radioactive waste treatment device and method. Background Technology

[0002] Nuclear power plants generate large quantities of radioactive waste annually, including absorbent paper, cleaning cloths, and wet plastics, due to maintenance. Nuclear power plants typically use pressurization to separate the radioactive waste into solid and liquid components. However, this separation process inevitably causes solid debris or radioactive atomization due to the compression of the radioactive waste. Pressurization and reprocessing methods are not effective in dealing with these solid debris or radioactive atomization. Summary of the Invention

[0003] (a) Technical problems to be solved To address the shortcomings of existing technologies, this invention provides a radioactive waste treatment device and method, which solves the problem of ineffective treatment of solid debris or radioactive mist generated during radioactive waste compression.

[0004] (II) Technical Solution To achieve the above objectives, the present invention is implemented through the following technical solution: a radioactive waste treatment device, including a base frame, a vertical frame fixedly installed at one end of the base frame, a pressurizing component installed on the vertical frame, and a separation cylinder fixedly installed on the base frame; The bottom of the base frame is fixedly connected to two parallel guide frames. A moving trolley is installed inside the guide frames. A second motor is fixedly connected to the bottom of the moving trolley. A moving dish is rotatably installed above the moving trolley. The moving dish is fixedly connected to the output end of the second motor. A chain drive assembly is installed on the inner side of the base frame. The chain drive assembly drives the moving vehicle to move along the guide frame. The separation cylinder is set with double side walls with through holes on the inner wall and an open bottom in the position directly opposite the moving dish. A cover is detachably and fixedly connected to the outer side of the separation cylinder. A liquid tank is set at the bottom of the base frame.

[0005] Preferably, the pressurizing assembly includes a hydraulic cylinder and a pressure plate, the pressure plate being fixedly connected to the output end of the hydraulic cylinder, and the pressure plate being located directly above the separating cylinder.

[0006] Preferably, the chain drive assembly includes a support frame, with two support frames forming a group, and two groups are provided. Each group of support frames is rotatably connected to a rotating shaft. Rollers are fixedly connected to the outer side of each rotating shaft. A chain-type mesh belt is drivenly connected to the outer side of each roller. A connecting frame is fixedly connected to the upper part of the chain-type mesh belt. The connecting frame is fixedly connected to the mobile vehicle. A motor mounted on the side of one of the rotating shafts is fixedly connected to the end of the rotating shaft.

[0007] Preferably, the separation cylinder has a baffle fixed at the lower end of its outer wall near the upright, the liquid tank moves toward the chain mesh belt and engages with the baffle, and the liquid tank has a handle fixed on the side away from the chain mesh belt.

[0008] Preferably, the separator has an inner retaining ring fixed at the lower end of its inner wall near the upright, and hydraulic cylinders are fixedly installed at both ends of the inner retaining ring. The moving vehicle has an inlet on the side facing the upright that corresponds to the output end of the hydraulic cylinder.

[0009] Preferably, the separating cylinder is connected to an air guide groove on one side of the corresponding upright, and the separating cylinder is provided with air vents on both sides of the corresponding air guide groove. The lower part of the air guide groove is connected to a shield, the interior of the shield is filled with activated carbon, and the upper part of the shield is provided with an exhaust pipe for installing an air extraction device.

[0010] Preferably, the guide frame is located outside the group of support frames and is fixedly connected. The guide frame is an upward-opening U-shaped groove, and the wheels of the mobile vehicle slide in contact with the U-shaped groove.

[0011] A method for treating radioactive waste includes the following: First, hydraulic cylinder one drives the pressure plate to move to the top of the separator cylinder, and the chain drive assembly drives the moving cart to move into the separator cylinder. Then, the output end of hydraulic cylinder two extends upward and inserts into the socket of the inner retaining ring to fix the moving dish on the moving cart inside the separator cylinder. Next, the radioactive waste is poured into the separation cylinder from the top. Then, the pressure plate is driven by the hydraulic cylinder to move into the separation cylinder. The radioactive waste is compressed by the cooperation of the separation cylinder, the pressure plate and the moving dish. The radioactive waste liquid falls from between the two side walls of the separation cylinder, through the baffle and the inner baffle ring and into the liquid tank. Finally, the output end of the second hydraulic cylinder moves downward and slides out of the socket of the inner retaining ring, and then drives the moving vehicle to move to the outside of the separator cylinder through the chain drive assembly.

[0012] (III) Beneficial Effects This invention provides a radioactive waste treatment apparatus and method. It has the following beneficial effects: In this invention, a hydraulically powered pressure plate, in conjunction with a moving dish, compresses radioactive waste, achieving separation of solid, liquid, and gas states during the process. Furthermore, this process takes place within a relatively enclosed space, which significantly reduces the dispersion of solid debris or radioactive fog into the outside air, thus greatly improving the treatment effect. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of the present invention on one side of the motor; Figure 2 This is a schematic diagram of the structure of the present invention on one side of the support frame; Figure 3 This is a top view of the present invention; Figure 4 This is a bottom view of the present invention; Figure 5 This is a longitudinal sectional view of the present invention; Figure 6 This is a schematic diagram of the structure of the present invention with the base frame and baffle removed; Figure 7 For the present invention Figure 6 A structural diagram from another perspective.

[0014] The components are as follows: 1. Base frame; 2. Vertical frame; 3. Pressure plate; 4. Hydraulic cylinder one; 5. Separating cylinder; 6. Exhaust pipe; 7. Cover; 8. Moving dish; 9. Moving cart; 10. Guide frame; 11. Roller; 12. Support frame; 13. Motor one; 14. Chain mesh belt; 15. Rotating shaft; 16. Liquid tank; 17. Connecting frame; 18. Air guide groove; 19. Baffle; 20. Motor two; 21. Inner retaining ring; 22. Hydraulic cylinder two. Detailed Implementation

[0015] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0016] Example 1: like Figures 1-7 As shown, this embodiment of the invention provides a radioactive waste treatment device, including a base frame 1, a vertical frame 2 fixedly installed at one end of the base frame 1, a pressurizing assembly installed on the vertical frame 2, and a separation cylinder 5 fixedly installed on the base frame 1. Specifically, the pressurizing assembly includes a hydraulic cylinder 4 and a pressure plate 3. The pressure plate 3 is fixedly connected to the output end of the hydraulic cylinder 4 and is located directly above the separation cylinder 5. The vertical frame 2 is L-shaped and the upper part is horizontal. The hydraulic cylinder 4 is fixedly installed on the upper part of the vertical frame 2. Guide rods are slidably connected to both sides of the hydraulic cylinder 4 on the upper part of the vertical frame 2. The lower end of the guide rods is fixedly connected to the pressure plate 3. The separation cylinder 5 is cylindrical. After the pressure plate 3 is driven by the hydraulic cylinder 4 to extend downward into the separation cylinder 5, the outer side of the pressure plate 3 slides in contact with the inner wall of the separation cylinder 5. The bottom of the base frame 1 is fixedly connected to two parallel guide frames 10. A moving vehicle 9 is installed inside the guide frame 10. The guide frame 10 is a U-shaped groove with an upward opening. The wheels of the moving vehicle 9 are in sliding contact with the U-shaped groove. A motor 20 is fixedly connected to the bottom of the moving vehicle 9. A moving dish 8 is rotatably installed above the moving vehicle 9. The moving dish 8 is fixedly connected to the output end of the motor 20. In the above, the moving dish 8 is driven to rotate by the motor 20, and the guide frame 10 provides guidance for the movement of the moving vehicle 9. A chain drive assembly is installed on the inner side of the base frame 1. The chain drive assembly drives the mobile vehicle 9 to move along the guide frame 10. Specifically, the chain drive assembly includes support frames 12, with two sets of support frames 12 arranged in pairs. The guide frame 10 is located outside the set of support frames 12 and is fixedly connected. A rotating shaft 15 is rotatably connected between each set of support frames 12. Rollers 11 are fixedly connected to the outer side of each rotating shaft 15. A chain-type mesh belt 14 is driven to the outer side of the rollers 11. A connecting frame 17 is fixedly connected to the upper part of the chain-type mesh belt 14. The connecting frame 17 is fixedly connected to the mobile vehicle 9. The edge of the roller 11 is a sprocket, and the two sides of the chain-type mesh belt 14 are chains. Through the meshing of the sprocket and the chain, the active roller 11 drives the chain-type mesh belt 14 to rotate. Specifically, a motor 13 is fixedly connected to one of the support frames 12 in a group away from the upright frame 2 on the side away from the roller 11. The motor 13 is fixedly connected to the corresponding rotating shaft 15. Thus, under the drive of the motor 13, the rotating shaft 15 connected to it is rotated, which in turn drives the active roller 11 to move the chain-type mesh belt 14, and drives the connecting frame 17 to make the moving car 9 move along the guide frame 10. The separation cylinder 5 has a double side wall with through holes on the side wall that moves close to the corresponding moving dish 8 and is open at the bottom. A shield 7 is detachably fixed to the outside of the separation cylinder 5. A liquid tank 16 is provided at the bottom of the base frame 1. As the pressure plate 3 and the moving dish 8 work together to squeeze the nuclear waste, the radioactive waste liquid falls into the liquid tank 16 through the through holes from between the double side walls of the separation cylinder 5.

[0017] The separator 5 has a baffle 19 fixed at the lower end of its outer wall near the support frame 2. The liquid tank 16 moves toward the chain mesh belt 14 and locks onto the baffle 19. The liquid tank 16 has a handle fixed on the side away from the chain mesh belt 14. The baffle 19 is used to limit the placement of the liquid tank 16, so that the liquid tank 16 can collect the dripping squeezed radioactive waste liquid. The liquid tank 16 can be moved out from under the base frame 1 by a robotic arm from the handle. Wheels can be arranged at the bottom of the liquid tank 16 to facilitate the movement of the liquid tank 16.

[0018] An inner retaining ring 21 is fixed to the lower end of the inner wall of the separation cylinder 5 near the support frame 2. Hydraulic cylinders 22 are fixedly installed at both ends of the inner retaining ring 21. An insertion rod is fixedly connected to the output end of the hydraulic cylinder 22. The moving vehicle 9 is provided with an insertion port corresponding to the output end of the hydraulic cylinder 22 on the side facing the support frame 2. The inner retaining ring 21 and the baffle 19 form a downward flow channel for squeezing radioactive waste liquid. After the output end of the hydraulic cylinder 22 drives the insertion rod to move upward and insert it into the insertion port, the moving vehicle 9 is positioned after moving into the separation cylinder 5. After the pressure plate 3 is placed to squeeze the nuclear waste, the moving vehicle 9 slides out of the separation cylinder 5.

[0019] A method for treating radioactive waste includes the following: First, hydraulic cylinder 4 drives the pressure plate 3 to move above the separation cylinder 5, and the chain drive assembly drives the moving cart 9 to move into the separation cylinder 5. Then, the output end of hydraulic cylinder 22 extends upward and inserts into the socket of the inner retaining ring 21 to fix the moving dish 8 on the moving cart 9 inside the separation cylinder 5. Next, the radioactive waste is poured into the separation cylinder 5 from the top. Then, the hydraulic cylinder 4 drives the pressure plate 3 to move into the separation cylinder 5. The radioactive waste is compressed by the cooperation of the separation cylinder 5, the pressure plate 3 and the moving dish 8. The radioactive waste liquid falls from between the two side walls of the separation cylinder 5, through the baffle 19 and the inner baffle ring 21 into the liquid tank 16. Finally, the output end of hydraulic cylinder 22 moves downward and slides out of the socket of inner retaining ring 21. Then, through the chain drive assembly, it drives the moving car 9 to move to the outside of the separation cylinder 5. Then, through motor 20, it drives the moving car 9 to rotate to the opening of the moving dish 8 away from the separation cylinder 5. In this way, the robotic arm can be used to pick up the compressed radioactive waste.

[0020] Example 2: The difference between this embodiment and Embodiment 1 is that, based on Embodiment 1, the separation cylinder 5 is connected to a gas guide groove 18 on one side of the corresponding support frame 2. The separation cylinder 5 is provided with ventilation holes on both sides of the corresponding gas guide groove 18. The lower part of the gas guide groove 18 is connected to the shield 7. Activated carbon is placed inside the shield 7. An exhaust pipe 6 is provided on the upper part of the shield 7. The exhaust pipe 6 is used to install a suction device. The suction force of the suction device generates a suction force at the gas guide groove 18, so that the radioactive waste gas impurities squeezed by the separation cylinder 5 can be adsorbed by the activated carbon in the shield 7. A sealing ring is provided at the connection between the shield 7 and the gas guide groove 18, so that the shield 7 can be replaced after the activated carbon in the shield 7 has been used for a period of time.

[0021] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A radioactive waste treatment device, comprising a base frame (1), characterized in that: A vertical frame (2) is fixedly installed at one end of the base frame (1), a pressurizing component is installed on the vertical frame (2), and a separation cylinder (5) is fixedly installed on the base frame (1). The bottom of the base frame (1) is fixedly connected to two parallel guide frames (10), a moving car (9) is provided inside the guide frame (10), a motor (20) is fixedly connected to the bottom of the moving car (9), a moving dish (8) is rotatably provided above the moving car (9), and the moving dish (8) is fixedly connected to the output end of the motor (20). A chain drive assembly is installed on the inner side of the base frame (1). The chain drive assembly drives the moving vehicle (9) to move along the guide frame (10). The separation cylinder (5) is set with double side walls with through holes on the inner wall and open bottom in the position directly opposite the moving dish (8). A cover (7) is detachably fixed to the outer side of the separation cylinder (5). A liquid tank (16) is set at the bottom of the base frame (1).

2. The radioactive waste treatment device according to claim 1, characterized in that: The pressurizing assembly includes a hydraulic cylinder (4) and a pressure plate (3). The pressure plate (3) is fixedly connected to the output end of the hydraulic cylinder (4) and is located directly above the separator (5).

3. A radioactive waste treatment device according to claim 2, characterized in that: The chain drive assembly includes a support frame (12), with two support frames (12) forming a group and two groups provided. A rotating shaft (15) is rotatably connected between the support frames (12) in each group. Rollers (11) are fixedly connected to the outer side of each rotating shaft (15). A chain-type mesh belt (14) is driven to the outer side of each roller (11). A connecting frame (17) is fixedly connected to the upper part of the chain-type mesh belt (14). The connecting frame (17) is fixedly connected to the moving vehicle (9). A motor (13) installed on the side of the support frame (12) is fixedly connected to the end of one of the rotating shafts (15).

4. A radioactive waste treatment device according to claim 3, characterized in that: The separation cylinder (5) has a baffle (19) fixed at the lower end of its outer wall near the upright (2). The liquid tank (16) moves toward the chain mesh belt (14) and locks onto the baffle (19). The liquid tank (16) has a handle fixed on the side away from the chain mesh belt (14).

5. A radioactive waste treatment device according to claim 4, characterized in that: The separator (5) has an inner retaining ring (21) fixed at the lower end of its inner wall near the support frame (2). Hydraulic cylinders (22) are fixedly installed at both ends of the inner retaining ring (21). The moving vehicle (9) has an insertion port on the side facing the support frame (2) that corresponds to the output end of the hydraulic cylinder (22).

6. A radioactive waste treatment device according to claim 5, characterized in that: The separation cylinder (5) is connected to an air guide groove (18) on one side of the corresponding upright (2). The separation cylinder (5) is provided with air vents on both sides of the corresponding air guide groove (18). The lower part of the air guide groove (18) is connected to the cover (7). Activated carbon is placed inside the cover (7). An exhaust pipe (6) is provided on the upper part of the cover (7). The exhaust pipe (6) is used to install air extraction equipment.

7. A radioactive waste treatment device according to claim 6, characterized in that: The guide frame (10) is located outside the group of support frames (12) and is fixedly connected. The guide frame (10) is a U-shaped groove with an upward opening. The wheels of the mobile vehicle (9) are in sliding contact with the U-shaped groove.

8. The radioactive waste treatment method proposed in the radioactive waste treatment device according to claim 7, characterized in that, Includes the following: First, the pressure plate (3) is moved to the top of the separation cylinder (5) by hydraulic cylinder one (4), and the moving cart (9) is moved into the separation cylinder (5) by the chain drive assembly. Then, the output end of hydraulic cylinder two (22) is extended upward and inserted into the socket of the inner retaining ring (21) to fix the moving dish (8) on the moving cart (9) in the separation cylinder (5). Next, the radioactive waste is poured from the top of the separation cylinder (5) into the separation cylinder (5). Then, the pressure plate (3) is driven to move into the separation cylinder (5) by the hydraulic cylinder (4). The radioactive waste is compressed by the cooperation of the separation cylinder (5), the pressure plate (3) and the moving dish (8). The radioactive waste liquid contained therein falls from between the two side walls of the separation cylinder (5) through the baffle (19) and the inner baffle ring (21) into the liquid tank (16). Finally, the output end of the hydraulic cylinder (22) moves downward and slides out of the socket of the inner retaining ring (21), and then drives the moving car (9) to move to the outside of the separator (5) through the chain drive assembly.

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