Radioactive Pyrolysis Ash Discharge System and Its Control Method

Abstract

The present invention discloses a radioactive pyrolysis ash discharging system and a control method thereof. The radioactive pyrolysis ash discharging system includes an ash storage bucket, a weighing device and a conveying device, and the discharge port of the conveying device extends into a shielding box; an inlet and outlet, an operation port and an observation window are provided on the shielding box, and a controllable shielding door is installed at the inlet and outlet; a first conveying device and a first detection and positioning device cooperating with the first conveying device and the discharge port are installed inside the shielding box; a second conveying device is installed outside the shielding box; the discharge port is connected with a quick-insert male head through a first hose, a filter, a quick-insert female head cooperating with the quick-insert male head and a detachable plug cooperating with the quick-insert female head are installed at the top of the ash storage bucket; the weighing device includes a weighing part cooperating with the first conveying device and an operation display part located outside the shielding box and connected with the weighing part; the control unit is respectively connected with the first detection and positioning device, the first conveying device, the second conveying device, the controllable shielding door and the conveying device.

Description

Technical Field

[0001] The present invention relates to the field of radioactive pyrolysis ash treatment, and particularly relates to a radioactive pyrolysis ash discharging system and a control method thereof. Background Art

[0002] Currently, in order to collect radioactive pyrolysis ash and lay a foundation for subsequent radioactive pyrolysis ash treatment, it is necessary to load the radioactive pyrolysis ash in the ash discharging hopper into the ash storage bucket through the ash discharging system.

[0003] During this ash discharging process, the outer edge of the ash storage bucket cover and the docking device of the shielding box are prone to rubbing and jamming, resulting in a large amount of radioactive pyrolysis ash in the ash storage bucket spilling into the shielding box. At the same time, during the process of opening the ash storage bucket cover, it is necessary to first unlock the buckle device, and this buckle device is prone to failure, resulting in the inability to normally open the ash storage bucket cover, and further causing the ash discharging operation to be unable to proceed normally. And the current ash discharging system cannot measure the ash discharging amount, which affects subsequent processing. Summary of the Invention

[0004] Aiming at the above deficiencies in the prior art, the present invention aims to provide a radioactive pyrolysis ash discharging system and a control method thereof that are not prone to causing radioactive pyrolysis ash in the ash storage bucket to spill into the shielding box, are convenient to operate, and can measure the ash discharging amount.

[0005] In order to achieve the purpose of the above invention, the technical solution adopted by the present invention is as follows:

[0006] Provide a radioactive pyrolysis ash discharging system, which includes a control unit, an ash storage bucket, a weighing device, and a transmission device for connecting with the ash discharging outlet, and the discharge port of the transmission device extends into the shielding box; an inlet / outlet, an operation port, and an observation window are respectively opened on the first side wall and the second side wall of the shielding box, and a controllable shielding door is installed at the inlet / outlet; a first conveyor is installed in the shielding box below the discharge port, and a first detection and positioning device for cooperating with the first conveyor and the discharge port is installed in the shielding box; a second conveyor for cooperating with the inlet / outlet and the first conveyor is installed outside the shielding box;

[0007] The discharge port is connected with a quick-connect male head through a first hose, a filter, a quick-connect female head cooperating with the quick-connect male head, and a detachable plug cooperating with the quick-connect female head are installed on the top of the ash storage bucket; the weighing device includes a weighing part cooperating with the first conveyor and an operation display part located outside the shielding box and connected to the weighing part; the control unit is respectively connected to the first detection and positioning device, the first conveyor, the second conveyor, the controllable shielding door, and the transmission device.

[0008] Further, the first detection and positioning device includes a barrel detection sensor and a driving part whose two output ends move linearly. An arc-shaped clamping frame facing the center line of the first conveyor is installed on the output end of the driving part. Fixed pulleys are installed at both ends of the arc-shaped clamping frame. The barrel detection sensor and the driving part are respectively connected to the control unit.

[0009] Further, the conveying device includes a screw conveyor connected to the control unit. The feed inlet of the screw conveyor is connected to the ash discharge outlet through a second hose.

[0010] Further, a vibrator connected to the control unit is installed at a position on the screw conveyor close to the discharge outlet.

[0011] Further, the first conveyor and the second conveyor are roller tracks.

[0012] Further, the quick-connect female head includes a circular through-hole opened at the top of the ash-containing barrel. A plurality of first locking protrusions are provided on the inner wall of the circular through-hole. All the first locking protrusions are centrosymmetric about the center of the circular through-hole. The cross-sectional area of the first locking protrusion gradually increases in the counterclockwise direction. A limiting protrusion is provided at the end with a larger cross-sectional area of the first locking protrusion. The quick-connect male head includes a tubular body. A sealing ring and an annular protrusion whose diameter is smaller than that of the tubular body are provided at one end of the tubular body. A plurality of second locking protrusions cooperating with the first locking protrusions and the limiting protrusions are provided on the outer wall of the annular protrusion.

[0013] Further, a hoisting device and a second detection and positioning device both cooperating with the second conveyor are installed outside the shielding box. The second detection and positioning device is connected to the control unit.

[0014] On the other hand, a control method for the radioactive pyrolysis ash discharging system designed in this solution is provided, which includes:

[0015] S1. Move the ash-containing barrel to the first set position of the second conveyor.

[0016] S2. The control unit controls the controllable shielding door to open for the first set time, and controls the first conveyor and the second conveyor to run for the second set time to transfer the ash-containing barrel to the second set position on the first conveyor.

[0017] S3. After the first detection and positioning device detects the arrival of the ash-containing barrel, the control unit controls the first detection and positioning device to clamp and position the ash-containing barrel on the center line of the first conveyor.

[0018] S4. Connect the quick-connect male head and the quick-connect female head through the operation port and the observation window, and use the weighing device to weigh and tare the ash-containing barrel and the first conveyor, and then collect and display the mass of the radioactive pyrolysis ash in the ash-containing barrel in real time.

[0019] S5. Open the ash discharge outlet and start the transmission device. Part of the radioactive pyrolysis ash in the ash discharge hopper enters the ash storage bucket through the transmission device and the first hose.

[0020] S6. When the mass of the radioactive pyrolysis ash in the ash storage bucket reaches the set index, close the transmission device and the ash discharge outlet.

[0021] S7. Install the detachable plug on the quick-connect female head through the operation port and the observation window.

[0022] S7. The control unit controls the controllable shielding door to open for the first set time, and controls the second transmission device and the first transmission device to open for the third set time to move the ash storage bucket onto the first transmission device.

[0023] Furthermore, a hoisting device and a second detection and positioning device that both cooperate with the second transmission device are installed outside the shielding box, and the second detection and positioning device is connected to the control unit; step S1 further includes:

[0024] Use the hoisting device to move the ash storage bucket to the first set position. After the second detection and positioning device detects the arrival of the ash storage bucket, the control unit controls the second detection and positioning device to clamp and position the ash storage bucket on the center line of the second transmission device.

[0025] The beneficial effects of the present invention are as follows:

[0026] Based on the operation port, the observation window, the quick-connect male head, the quick-connect female head, the filter, and the detachable plug, the rapid unloading and loading of radioactive pyrolysis ash are realized. The operation is convenient and there will be no collision with the shielding box during the operation, so it is not easy to cause the radioactive pyrolysis ash in the ash storage bucket to spill into the shielding box. Combining the settings of the controllable shielding door and the shielding box reduces the radiation dose received by personnel and enhances the operability, safety, and practicability of the ash discharge process.

[0027] At the same time, the setting of the weighing device realizes the measurement of the ash discharge amount, which provides convenience for subsequent processing. Description of the Drawings

[0028] Figure 1 It is a schematic structural diagram of the radioactive pyrolysis ash discharge system in a specific embodiment;

[0029] Figure 2 is Figure 1 A schematic structural diagram without a shielding box;

[0030] Figure 3 It is a schematic structural diagram of the arc-shaped clamping frame in a specific embodiment;

[0031] Figure 4 and Figure 5 is Figure 1 A schematic structural diagram of the shielding box in;

[0032] Figure 6 In Figure 1 , a partial top view of the top of the ash bucket;

[0033] Figure 7 Along Figure 6 In

[0034] Figure 8 In Figure 1 , a front view of the quick male connector;

[0035] Figure 9 In Figure 8 , a top view;

[0036] Figure 10 Along Figure 9 In

[0037] Figure 11 In Figure 1 , a sectional view of the filter.

[0038] Wherein, 1. ash discharge hopper; 2. star-shaped discharge valve; 3. transmission device; 4. air outlet; 5. first conveyor; 6. weighing part; 7. first detection and positioning device; 8. second conveyor; 9. second detection and positioning device; 10. controllable shielding door; 11. operation port; 12. air inlet; 13. first hose; 14. vibrator; 15. observation window; 16. ash bucket; 17. inlet and outlet; 18. arc-shaped clamping frame; 19. fixed pulley; 20. tubular body; 21. annular protrusion; 22. second locking protrusion; 23. sealing ring; 24. circular through hole; 25. first locking protrusion; 26. limiting protrusion; 27. second plug; 28. filter membrane; 29. gasket. Specific embodiments

[0039] The following will combine with the accompanying drawings to make a detailed description of the specific embodiments of the present invention, so as to facilitate those skilled in the art of this technical field to understand the present invention. However, it should be clear that the embodiments described below are only a part of the embodiments of the present invention, rather than all the embodiments. Without departing from the spirit and scope of the present invention defined and determined by the appended claims, all other embodiments obtained by those skilled in the art without any creative labor belong to the protection scope of the present invention.

[0040] As Figure 1 And Figure 2As shown in the figure, the radioactive pyrolysis ash discharging system includes a control unit, an ash bucket 16, a weighing device, and a conveying device 3 for connecting to the ash discharging outlet. The discharging outlet of the conveying device 3 extends into the shielding box. The first side wall and the second side wall of the shielding box are respectively provided with an inlet and outlet 17, an operation port 11, and an observation window 15. A controllable shielding door 10 is installed at the inlet and outlet 17. A first conveying device 5 is installed in the shielding box below the discharging outlet. A first detection and positioning device 7 that cooperates with the first conveying device 5 and the discharging outlet is installed in the shielding box. A second conveying device 8 that cooperates with the inlet and outlet 17 and the first conveying device 5 is installed outside the shielding box.

[0041] The discharging outlet is connected with a quick-connect male head through a first hose 13. A filter, a quick-connect female head that cooperates with the quick-connect male head, and a detachable plug that cooperates with the quick-connect female head are installed at the top of the ash bucket 16. The weighing device includes a weighing part 6 that cooperates with the first conveying device 5 and an operation display part located outside the shielding box and connected to the weighing part 6. The control unit is respectively connected to the first detection and positioning device 7, the first conveying device 5, the second conveying device 8, the controllable shielding door 10, and the conveying device 3.

[0042] During implementation, this solution preferably includes a barrel arrival detection sensor and a driving part with two output ends moving linearly in the first detection and positioning device 7. As Figure 3 shown, an arc-shaped clamping frame 18 facing the center line of the first conveying device 5 is installed at the output end of the driving part. Fixed pulleys 19 are installed at both ends of the arc-shaped clamping frame 18. The barrel arrival detection sensor and the driving part are respectively connected to the control unit. Among them, the barrel arrival detection sensor is an infrared pair sensor installed on both sides of the first conveying device 5 for detecting the arrival of the ash bucket 16.

[0043] Among them, as Figure 1 shown, the conveying device 3 includes a screw conveyor connected to the control unit. The feeding port of the screw conveyor is connected to the ash discharging outlet through a second hose. At the same time, a vibrator 14 connected to the control unit is installed at a position close to the discharging outlet on the screw conveyor to accelerate the ash discharging speed at the discharging outlet. Moreover, the operator can manually adjust the operating power of the screw conveyor according to the actual weight of the radioactive pyrolysis ash in the ash bucket 16 to control the ash inlet speed of the ash bucket 16, so as to make full use of the actual capacity of the ash bucket 16.

[0044] As Figure 4 and Figure 5 shown, the shielding box is provided with an air inlet 12 and an air outlet 4 for ventilation. At the same time, the shielding box is a box body with a lead coating on the surface.

[0045] Among them, the first conveying device 5 and the second conveying device 8 are roller tracks. The weighing device is used to weigh the ash bucket 16 and the first conveying device 5 as a whole, remove the tare weight, and then collect and display the mass of the radioactive pyrolysis ash in the ash bucket 16 in real time.

[0046] The controllable shielding door 10 is a pneumatic translation shielding door. The driving part of the controllable shielding door 10 is installed above one side of the first transmission device through a mounting bracket. After the pneumatic translation shielding door is closed, its door body is located in the gap between the second conveyor 8 and the shielding box and is close to the inlet / outlet 17, thus closing the inlet / outlet 17. This gap is generally less than 5 cm, and one end of the first conveyor 5 is close to the inlet / outlet 17, so that this gap will not affect the smooth movement of the ash bucket 16 after the pneumatic translation shielding door is opened.

[0047] As Figure 6 and Figure 7 shown, the quick-insert female head includes a circular through-hole 24 opened at the top of the ash bucket 16. A plurality of first locking protrusions 25 are provided on the inner wall of the circular through-hole 24. All the first locking protrusions 25 are centrosymmetric about the center of the circular through-hole 24. The cross-sectional area of the first locking protrusion 25 gradually increases in the counterclockwise direction (the counterclockwise direction is with Figure 6 the viewing angle as the reference plane), and a limiting protrusion 26 is provided at the end with a larger cross-sectional area of the first locking protrusion 25. As Figures 8 to 10 shown, the quick-insert male head includes a tubular body 20. One end of the tubular body 20 is provided with a sealing ring 23 and an annular protrusion 21 whose diameter is smaller than the diameter of the tubular body 20. A plurality of second locking protrusions 22 that cooperate with the first locking protrusions 25 and the limiting protrusions 26 are provided on the outer wall of the annular protrusion 21.

[0048] During application, after aligning the quick plug with the circular through-hole 24 (the annular protrusion 21 is located inside the circular through-hole 24), then rotate the quick plug counterclockwise so that the second locking protrusion 22 is screwed to contact the limiting protrusion 26, and realize the quick connection between the quick-insert male head and the quick-insert female head. At the same time, under the abutment of the sealing ring 23 and the top plane of the ash bucket 16 on the outer edge of the circular through-hole 24, sealing is achieved, thus avoiding the overflow of radioactive pyrolytic ash from the connection between the quick-insert male head and the quick-insert female head.

[0049] Specifically, as Figures 6 to 10 shown, the number of both the first locking protrusions 25 and the second locking protrusions 22 is 4. Regarding the detachable plug, its structure is similar to that of the quick-insert male head, except that the other end of its tubular body is sealed.

[0050] Among them, the structural schematic diagram of the filter is as Figure 11 shown, so as to facilitate the overflow of the air in the ash bucket 16 (providing the possibility for radioactive pyrolytic ash to enter the ash bucket 16) while the radioactive pyrolytic ash in the ash bucket 16 cannot run out.

[0051] Among them, a hoisting device and a second detection and positioning device 9 that are both matched with the second conveyor 8 are installed outside the shielding box. The second detection and positioning device 9 is connected to the control unit. Thus, remote control is further realized, and the safety of the ash unloading process is further enhanced.

[0052] In another embodiment, the controllable shielding door 10 includes a door body and a motor mounted on a motor mounting bracket. A screw rod is installed at the output end of the motor, and the other end of the screw rod penetrates through a threaded hole formed in the door body. The door body can only move linearly along the slide. When the motor operates, it drives the screw rod to rotate, and then the door body moves linearly along the screw rod, thereby realizing the opening and closing of the inlet / outlet 17. Among them, the model of the filter is BNXG-80J.

[0053] In one embodiment, a star-shaped discharge valve 2 is installed at the ash discharge outlet to open and close the ash discharge outlet when needed.

[0054] On the other hand, the present solution also provides a control method for the radioactive pyrolysis ash discharging system designed by the present solution, which includes:

[0055] S1. Move the ash bucket 16 to the first set position of the second conveyor 8;

[0056] S2. The control unit controls the controllable shielding door 10 to open for a first set time, and controls the first conveyor 5 and the second conveyor 8 to operate for a second set time to transfer the ash bucket 16 to the second set position on the first conveyor 5;

[0057] S3. After the first detection and positioning device 7 detects the arrival of the ash bucket 16, the control unit controls the first detection and positioning device 7 to clamp and position the ash bucket 16 on the center line of the first conveyor 5;

[0058] S4. Connect the quick plug male head and the quick plug female head through the operation port 11 and the observation window 15, and use the weighing device to weigh and tare the ash bucket 16 and the first conveyor 5, and then collect and display the mass of the radioactive pyrolysis ash in the ash bucket 16 in real time;

[0059] S5. Open the ash discharge outlet and start the transmission device 3. Part of the radioactive pyrolysis ash in the ash discharge hopper 1 enters the ash bucket 16 through the transmission device 3 and the first hose 13;

[0060] S6. When the mass of the radioactive pyrolysis ash in the ash bucket 16 reaches the set index, close the transmission device 3 and the ash discharge outlet;

[0061] S7. Install the detachable plug on the quick plug female head through the operation port 11 and the observation window 15;

[0062] S7. The control unit controls the controllable shielding door 10 to open for a first set time, and controls the second conveyor 8 and the first conveyor 5 to open for a third set time to move the ash bucket 16 to the first transmission device.

[0063] When a hoisting device and a second detection and positioning device 9, both of which cooperate with the second conveying device 8, are installed outside the shielding box, and the second detection and positioning device 9 is connected to the control unit, step S1 further includes:

[0064] Using the hoisting device to move the ash bucket 16 to a first set position, after the second detection and positioning device 9 detects the arrival of the ash bucket 16, the control unit controls the second detection and positioning device 9 to clamp and position the ash bucket 16 on the center line of the second conveying device 8.

Claims

1. Radioactive pyrolysis ash discharging system, Characterized in that, It includes a control unit, an ash bucket (16), a weighing device, and a conveying device (3) for connecting with the ash discharging outlet. The discharging outlet of the conveying device (3) extends into the shielding box; on the first side wall and the second side wall of the shielding box, there are respectively an inlet and outlet (17), an operation port (11), and an observation window (15). A controllable shielding door (10) is installed at the inlet and outlet (17); inside the shielding box, a first conveying device (5) is installed below the discharging outlet, and a first detection and positioning device (7) that cooperates with the first conveying device (5) and the discharging outlet is installed inside the shielding box; outside the shielding box, a second conveying device (8) that cooperates with the inlet and outlet (17) and the first conveying device (5) is installed; The discharging outlet is connected with a quick-connect male head through a first hose (13). At the top of the ash bucket (16), there are installed a filter for the air in the ash bucket (16) to overflow while the radioactive pyrolysis ash in the ash bucket (16) cannot run out, a quick-connect female head that cooperates with the quick-connect male head, and a detachable plug that cooperates with the quick-connect female head; the weighing device includes a weighing part (6) that cooperates with the first conveying device (5) and an operation display part located outside the shielding box and connected to the weighing part (6); the control unit is respectively connected with the first detection and positioning device (7), the first conveying device (5), the second conveying device (8), the controllable shielding door (10), and the conveying device (3); The first detection and positioning device (7) includes a barrel arrival detection sensor and a driving part whose two output ends move linearly. An arc-shaped clamping frame (18) facing the center line of the first conveying device (5) is installed on the output end of the driving part. Fixed pulleys (19) are installed at both ends of the arc-shaped clamping frame (18). The barrel arrival detection sensor and the driving part are respectively connected with the control unit; The quick-connect female head includes a circular through hole (24) opened at the top of the ash bucket (16). A plurality of first locking protrusions (25) are arranged on the inner wall of the circular through hole (24). All the first locking protrusions (25) are centrosymmetric about the center of the circular through hole (24). The cross-sectional area of the first locking protrusion (25) gradually increases in the counterclockwise direction. A limiting protrusion (26) is arranged at the end with a large cross-sectional area of the first locking protrusion (25); the quick-connect male head includes a tubular body (20). A sealing ring (23) and an annular protrusion (21) whose diameter is smaller than the diameter of the tubular body (20) are arranged at one end of the tubular body (20). A plurality of second locking protrusions (22) that cooperate with the first locking protrusions (25) and the limiting protrusions (26) are arranged on the outer wall of the annular protrusion (21).

2. The radioactive pyrolysis ash discharging system according to claim 1, Characterized in that, The conveying device (3) includes a screw conveyor connected to the control unit. The feeding port of the screw conveyor is connected with the ash discharging outlet through a second hose.

3. The radioactive pyrolysis ash discharging system according to claim 2, Characterized in that, A vibrator (14) connected to the control unit is installed at a position near the discharge port of the screw conveyor.

4. The radioactive pyrolysis ash discharging system according to claim 1, characterized in that the first conveying device (5) and the second conveying device (8) are roller tracks.

5. The radioactive pyrolysis ash discharging system according to any one of claims 1-4, characterized in that a lifting device and a second detection and positioning device (9) that are both matched with the second conveying device (8) are installed outside the shielding box, and the second detection and positioning device (9) is connected to the control unit.

6. A control method for the radioactive pyrolysis ash discharging system according to any one of claims 1-4, characterized in that it includes: S1. Move the ash bucket (16) to the first set position of the second conveying device (8); S2. The control unit controls the controllable shielding door (10) to open for a first set time, and opens the first conveying device (5) and the second conveying device (8) to run for a second set time to move the ash bucket (16) to the second set position on the first conveying device (5); S3. After the first detection and positioning device (7) detects the arrival of the ash bucket (16), the control unit controls the first detection and positioning device (7) to clamp and position the ash bucket (16) on the center line of the first conveying device (5); S4. Connect the quick plug male head and the quick plug female head through the operation port (11) and the observation window (15), and use the weighing device to weigh and tare the ash bucket (16) and the first conveying device (5), and then collect and display the mass of the radioactive pyrolysis ash in the ash bucket (16) in real time; S5. Open the ash discharge outlet and start the transmission device (3), and part of the radioactive pyrolysis ash in the ash discharge hopper (1) enters the ash bucket (16) through the transmission device (3) and the first hose (13); S6. When the mass of the radioactive pyrolysis ash in the ash bucket (16) reaches the set index, close the transmission device (3) and the ash discharge outlet; S7. Install the detachable plug on the quick plug female head through the operation port (11) and the observation window (15); S8. The control unit controls the controllable shielding door (10) to open for a first set time, and controls the second conveying device (8) and the first conveying device (5) to open for a third set time to move the ash bucket (16) to the first transmission device.

7. The control method according to claim 6, characterized in that a lifting device and a second detection and positioning device (9) that are both matched with the second conveying device (8) are installed outside the shielding box, and the second detection and positioning device (9) is connected to the control unit; step S1 further includes: Use the lifting device to move the ash bucket (16) to the first set position. After the second detection and positioning device (9) detects the arrival of the ash bucket (16), the control unit controls the second detection and positioning device (9) to clamp and position the ash bucket (16) on the center line of the second conveying device (8).

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