Waste grouting fixing device and waste grouting fixing method

Abstract

The application discloses a waste grouting fixing device and a waste grouting fixing method. The waste grouting fixing device comprises a shielding container, a container shielding plug for closing the shielding container, a metal barrel arranged in the shielding container, a barrel cover for closing the metal barrel, and a container adapter which is matched on the shielding container and is openable and closable. When the shielding container receives radioactive waste and grouting, the container adapter is in an open state. After the shielding container receives the radioactive waste and before grouting, the container adapter is in a closed state. The application can safely perform grouting fixing and capping operation on the container receiving the radioactive waste, effectively reduces the investment of waste preparation production equipment, realizes radiation protection of workers, and reduces radioactive harm to the workers in the waste preparation process.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of radioactive waste treatment, and in particular to a waste grouting fixing device and a waste grouting fixing method. BACKGROUND

[0002] In nuclear power plants, in order to reduce the volume of final waste packages, nuclear facilities usually use 400L or 200L thin-walled steel barrels as packaging containers for radioactive waste. The steel barrels do not have shielding effect. Radioactive waste generated by nuclear facilities with a surface dose rate greater than 2mSv / h is usually considered in the design stage to reduce the irradiation risk to workers. The implementation path and remote automatic operation of the facility for processing and preparation are considered to reduce the irradiation risk to workers. This type of radioactive waste usually needs to be processed in an independent room, and a remote automatic operation device is used to transport the steel barrel, automatically open and close the barrel, and process or prepare the waste. The typical process is a cement solidification process line.

[0003] Taking a CPR1000 nuclear power plant as an example, the waste filter cartridges generated in the N570 hall of the nuclear auxiliary plant are all taken out of the filter by a waste filter cartridge replacement device with shielding function. Then, the replacement device is lifted by a crane, and a single filter cartridge is released into a steel barrel through a descending channel by remote operation. According to different sizes of the filter cartridges, a filter cartridge support is pre-installed in the steel barrel for positioning the filter cartridges. After the steel barrel receives the waste filter cartridges, it is sent to a specific position through a transmission system (such as a roller) for remote cement grouting operation to seal the waste filter cartridges in the container. For the filters in the remaining rooms, such as the shaft seal water injection filter (RCV003FI), the waste filter cartridges generated by the filters cannot be replaced by the waste filter cartridge replacement device. Therefore, the waste filter cartridges need to be manually replaced and are difficult to be sent to the cement solidification line for preparation after being placed in the barrel, which poses a certain irradiation risk. SUMMARY

[0004] The technical problem to be solved by the present application is to provide an improved waste grouting fixing device and a waste grouting fixing method.

[0005] The technical solution adopted by the present application to solve the technical problem is to provide a waste grouting fixing device, which comprises a shielding container, a container shielding plug for closing the shielding container, a metal barrel arranged in the shielding container, a barrel cover for closing the metal barrel, and a container adapter which is arranged on the shielding container and is openable and closable.

[0006] When the shielding container receives radioactive waste and grouting, the container adapter is in an open state.

[0007] After the shielding container receives radioactive waste and before grouting, the container adapter is in a closed state.

[0008] In some embodiments, the container adapter comprises a support for mounting on the top of the shielding container, a baffle movably fitted on the support;

[0009] The support is provided with a first interface and a second interface in communication with each other, the first interface is opposite to the top of the shielding container and in communication with the top opening of the shielding container, and the second interface is located on the side of the first interface away from the shielding container and is used at least for positioning the container shielding plug;

[0010] The baffle is movable to open and close the first interface, thereby closing or opening the top opening of the shielding container.

[0011] In some embodiments, the waste grouting fixing device further comprises a grabbing mechanism; the bucket cover is connected to one side of the container shielding plug through the grabbing mechanism, and the container shielding plug and the bucket cover are relatively rotatable.

[0012] In some embodiments, the grabbing mechanism comprises a grabbing operating rod and a grabbing body connected to the first end of the grabbing operating rod.

[0013] The container shielding plug is provided with a first through hole, the grabbing operating rod is arranged in the first through hole, the grabbing body is located on one side of the container shielding plug, and the second end of the grabbing operating rod is located on the other side of the container shielding plug.

[0014] In some embodiments, the container shielding plug is provided with a second through hole; the second through hole is used for the screw positioning tool to pass through, thereby screwing the screw on the screw hole of the bucket cover; and the second through hole is also used for the screw installation tool to pass through, thereby tightening or loosening the screw.

[0015] In some embodiments, the waste grouting fixing device further comprises a grouting shielding plug for being fitted on the top opening of the shielding container during grouting; the grouting shielding plug is provided with a grouting passage penetrating therethrough.

[0016] In some embodiments, the grouting passage comprises a grouting pipe penetrating the grouting shielding plug and a quick connector connected to the grouting pipe and located on the surface of the grouting shielding plug away from the shielding container.

[0017] The present application also provides a waste grouting fixing method, which adopts any one of the waste grouting fixing devices described above and comprises the following steps:

[0018] S1, opening the container adapter on the top of the shielding container, closing the container adapter after the radioactive waste is loaded into the metal bucket in the shielding container, and closing the top of the shielding container;

[0019] S2, connect the grouting device to the shielding container, and grout the cement into the metal barrel through the grouting device to cover the radioactive waste;

[0020] S3, hoist the container shielding plug and the barrel cover to the top of the shielding container, open the container adapter, and install and fix the barrel cover and the container shielding plug on the top of the metal barrel and the shielding container respectively.

[0021] In some embodiments, step S2 comprises:

[0022] S2.1, hoist the grouting shielding plug to the container adapter;

[0023] S2.2, open the shutter of the container adapter, release and position the grouting shielding plug on the top of the shielding container;

[0024] S2.3, connect the grouting device to the grouting channel on the grouting shielding plug, and perform cement grouting;

[0025] S2.4, after the grouting is completed, hoist the grouting shielding plug away from the shielding container, move the shutter of the container adapter, and close the top of the shielding container.

[0026] In some embodiments, step S3 comprises:

[0027] S3.1, after the grabbing mechanism on the container shielding cover grabs the barrel cover, hoist the container shielding cover to the top of the container adapter;

[0028] S3.2, open the shutter of the container adapter, release and position the container shielding cover on the top of the shielding container;

[0029] S3.3, use the bolt positioning tool to center the threaded hole or bolt on the barrel cover with the flange hole on the top of the metal barrel, and release the barrel cover to the metal barrel by the grabbing mechanism;

[0030] S3.4, use the bolt installation tool to lock the bolt on the barrel cover and the metal barrel.

[0031] The present application has the beneficial effect of safely performing grouting fixation and capping operation on the received radioactive waste container, effectively solving the problem of remote operation on the cement grouting fixation and automatic capping equipment production line when the high-dose rate radioactive waste barrel is difficult to send to the room where the dedicated radioactive waste treatment facility (such as the cement solidification production line) is located, effectively reducing the investment in waste preparation production equipment, and achieving radiation protection of workers and reducing the radioactive harm to workers during waste preparation process. BRIEF DESCRIPTION OF DRAWINGS

[0032] The present invention will be further described below with reference to the accompanying drawings and embodiments. In the accompanying drawings:

[0033] Figure 1 This is a longitudinal cross-sectional structural schematic diagram of a waste grouting fixing device (container adapter in closed state) according to an embodiment of the present invention;

[0034] Figure 2 This is a longitudinal cross-sectional structural schematic diagram of a waste grouting fixing device (container adapter in the open state) according to an embodiment of the present invention;

[0035] Figure 3 This is a schematic diagram of the longitudinal cross-sectional structure of a waste grouting fixing device container shielding plug located on the top of a shielding container according to an embodiment of the present invention;

[0036] Figure 4 This is a schematic diagram of the structure of a waste grouting fixing device connected to a grouting device according to an embodiment of the present invention;

[0037] Figure 5 This is a schematic flowchart of a waste grouting and fixing method according to an embodiment of the present invention. Detailed Implementation

[0038] To provide a clearer understanding of the technical features, objectives, and effects of the present invention, specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0039] The waste grouting and fixing device of the present invention is mainly used to receive radioactive waste and grout and seal it. Radioactive waste includes various high-dose-rate radioactive waste filter cartridges, compressible radioactive waste, and other wastes that require grouting and fixing.

[0040] like Figures 1-3 As shown, a waste grouting fixing device according to an embodiment of the present invention may include a shielding container 10, a metal bucket 20, a container shielding plug 11, a bucket lid 21, and a container adapter 30.

[0041] A metal drum 20 is loaded inside a shielded container 10 for receiving radioactive waste and securing it within by grouting. A lid 21 is fitted onto the metal drum 20 to seal it, and a container shielding plug 11 is fitted onto the shielded container 10 to seal it. A container adapter 30 is fitted onto the top of the container shield and can open or close the top of the shielded container 10 by its own opening and closing mechanism.

[0042] The shielding container 10 is made of steel, lead or other materials with shielding effect, and is used to load the metal drum 20 and provide shielding protection to prevent radioactive hazards to personnel and the environment during the receiving, filling and sealing of the metal drum 20.

[0043] The shielding container 10 is an open-top container, and a container shielding plug 11 is used to fit on the top of the shielding container 10 to close the open top thereof. The container shielding plug 11 is made of steel, lead or other materials having shielding effect, and can be preferably made of the same material as the shielding container 10. The container shielding plug 11 is detachably fitted on the top of the shielding container 10, so that the shielding container 10 can be opened or closed.

[0044] To position the container shielding plug 11, the top of the shielding container 10 is provided with an inner recessed step 12, on which the container shielding plug 11 is seated, and the container shielding plug 11 is limited on the step by the peripheral protruding wall of the step 12, so as not to be translated away from the shielding container 10.

[0045] The metal barrel 20 is a thin-walled barrel relative to the shielding container 10, such as a steel barrel or the like. The metal barrel 20 is used to receive radioactive waste and the like, and is an open-top cylinder. A barrel cover 21 is adapted to the metal barrel 20 and is used to cover the metal barrel 20 to close the metal barrel 20.

[0046] Compared with the container shielding plug 11, the container adapter 30 is used to temporarily (or temporarily) open or close the shielding container 10 after the container shielding plug 11 is detached from the shielding container 10. It includes: when the shielding container 10 receives radioactive waste, grouting, the container adapter 30 is in an open state, as shown in Figure 2 ; after the shielding container 10 receives radioactive waste and before grouting, the container adapter 30 is in a closed state to reduce the risk of radiation, as shown in Figure 1 .

[0047] In some embodiments, the container adapter 30 can include a support 31 and a baffle 32. The support 31 is used to be mounted on the top of the shielding container 10 and to surround the top of the shielding container 10. The open top of the shielding container 10 is provided such that the top thereof forms an opening of the shielding container 10.

[0048] The baffle 32 is movably fitted on the support 31, and by moving the baffle 32 back and forth (horizontally) relative to the support 31, the baffle 32 can be fitted to the opening of the shielding container 10 to close the top opening of the shielding container 10, and can be away from the opening to open the top opening of the shielding container 10.

[0049] The movement of the baffle 32 can be achieved by manual pushing and pulling by the staff, or can be connected to a driving mechanism to be controlled and achieved by the driving mechanism. The driving mechanism can include a driving body such as a cylinder or a motor.

[0050] Specifically, the support 31 can be provided with a first interface 311 and a second interface 312 in communication with each other, the first interface 311 is opposite to the shielding container 10 and in communication with the top opening of the shielding container 10, and the second interface 312 is located on the side of the first interface 311 away from the shielding container 10, and is at least used for positioning the container shielding plug 11. The baffle 32 can be moved to open and close the first interface 311, so as to close or open the top opening of the shielding container 10.

[0051] For the baffle 32, it can be a whole piece, and is moved to close or open the first interface 311 from one side of the support 31. The baffle 32 can also be two or more pieces, and is moved to close or open the first interface 311 from different directions.

[0052] The container adapter 30 can be provided with lifting lugs for lifting.

[0053] Further, the waste grouting fixing device of the present application can further comprise a grabbing mechanism 40; the bucket cover 21 is connected to one side of the container shielding plug 11 through the grabbing mechanism 40. Through the grabbing mechanism 40, when the container shielding plug 11 is lifted and assembled, the bucket cover 21 is also lifted and assembled. The container shielding plug 11 and the bucket cover 21 can be relatively rotated, so that the container shielding plug 11 can be rotated when the bucket cover 21 is bolted one by one, that is, the container shielding plug 11 can be rotated when the bucket cover 21 is bolted one by one.

[0054] Alternatively, the grabbing mechanism 40 comprises a grabbing operating rod and a grabbing body connected to the first end of the grabbing operating rod.

[0055] Corresponding to the grabbing operating rod, the container shielding plug 11 is provided with a first through hole 111 penetrating the two surfaces of the container shielding plug 11. The grabbing operating rod is arranged in the first through hole 111, and the first end of the grabbing operating rod is located on the side of the container shielding plug 11 facing the shielding container 10, that is, the grabbing body is located on the side of the container shielding plug 11. The second end of the grabbing operating rod is located on the other side of the container shielding plug 11 away from the shielding container 10.

[0056] In order to realize the disassembly and assembly of the bucket cover 21 outside the shielding container 10, the container shielding plug 11 can be further provided with a second through hole 112 penetrating the two surfaces of the container shielding plug 11. The second through hole 112 can be used for the bolt positioning tool to pass through and cooperate with the bolt hole of the bucket cover 21, and can also be used for the bolt installation tool to pass through and tighten or loosen the bolt.

[0057] Further, as Figure 4As shown, the waste grouting fixing device of the present application can further comprise a grouting shield plug 50 for fitting on the top opening of the shield container 10 during grouting. The grouting shield plug 50 is provided with a grouting passage 51 therethrough for connecting with the grouting device 100, through which the cement enters the shield container 10 and fills in the metal barrel 20.

[0058] The grouting shield plug 50 can further be provided with a liquid level meter 52 or a liquid level measuring point for inserting the liquid level meter. The liquid level in the metal barrel 20 is monitored by the liquid level meter 52 to avoid overfilling of the cement slurry.

[0059] The liquid level meter 52 can be an ultrasonic liquid level meter, an infrared liquid level meter or other forms of liquid level meters.

[0060] In some embodiments, the grouting passage 51 comprises a grouting pipe 511 penetrating through the grouting shield plug 50 and a quick connector 512 connected to the grouting pipe 511 and located on the surface of the grouting shield plug 50 facing away from the shield container 10. The quick connector 512 enables quick connection of the grouting passage 51 with the grouting device 100, improving the convenience and efficiency of operation. The grouting device 100 is a mobile grouting equipment, which is convenient for use with the waste grouting fixing device in multiple occasions.

[0061] The waste grouting fixing device of the present application is used to realize the method for grouting and fixing of waste, as shown in Figure 5 , the waste grouting fixing method realized by the waste grouting fixing device can comprise the following steps:

[0062] S1, as shown in Figure 5 (1) to (2), the container adapter 30 is pre-assembled to the top of the shield container 10. At the top of the shield container 10, the baffle 32 of the container adapter 30 is opened, thereby opening the shield container 10 and the metal barrel 20 to receive radioactive waste. After the radioactive waste is loaded into the metal barrel 20 inside the shield container 10, the baffle 32 of the container adapter 30 is closed, closing the top of the shield container 10.

[0063] The opening and closing of the baffle 32 can be achieved manually by the staff or by a driving mechanism.

[0064] S2, as shown in Figure 5 (3), the grouting device 100 is connected to the shield container 10, and the cement is injected into the metal barrel 20 through the grouting device 100 to cover the radioactive waste.

[0065] Specifically, referring to Figure 5 (2) to (3), step S2 can comprise the following steps:

[0066] S2.1, in the state that the baffle 32 of the container adapter 30 is closed (the baffle 32 blocks in the first interface 311), the grouting shield plug 50 is hoisted to the container adapter 30, and the grouting shield plug 50 is fitted in the second interface 312 of the container adapter 30.

[0067] S2.2, the baffle 32 of the container adapter 30 is opened, and the grouting shield plug 50 is released and positioned on the top of the shield container 10. At this time, the grouting shield plug 50 can be positioned on the step 12 on the top of the shield container 10.

[0068] S2.3, the grouting device 100 is connected with the grouting channel 51 on the grouting shield plug 50, and cement grouting is performed.

[0069] During the grouting process, the height of the cement inside is detected by the liquid level meter 52 to avoid overfilling.

[0070] S2.4, after the grouting is completed, the grouting shield plug 50 is hoisted away from the shield container 10, the baffle 32 of the container adapter 30 is moved, and the top of the shield container 10 is closed, as shown in (3) to (4) in the figure. Figure 5

[0071] S3, the container shield plug 11 and the bucket cover 21 are hoisted to the top of the shield container 10, the container adapter 30 is opened, and the bucket cover 21 and the container shield plug 11 are respectively installed and fixed on the metal bucket 20 and the top of the shield container 10, as shown in (5) to (6) in the figure. Figure 5

[0072] The step S3 can further include:

[0073] S3.1, after the grabbing mechanism 40 on the container shield plug 11 grabs the bucket cover 21, the container shield plug 11 is hoisted to the top of the container adapter 30. The container shield plug 11 can be positioned by being fitted in the second interface 312, and the bucket cover 21 is smaller than the container shield plug 11 in the outer peripheral dimension, so as not to affect the cooperation of the container shield plug 11 with the container adapter 30 or the shield container 10.

[0074] S3.2, the baffle 32 of the container adapter 30 is opened, and the container shield plug 11 is released and positioned on the top of the shield container 10.

[0075] On the top of the shield container 10, the container shield plug 11 is positioned on the step 12 on the top of the shield container 10.

[0076] S3.3, the bolt positioning tool 60 is inserted into the shield container 10 through the second through hole 112, and the threaded holes or bolts on the bucket cover 21 are aligned with the flange holes on the top of the metal bucket 20 by using the bolt positioning tool 60.

[0077] ​​After the middle is completed, the grabbing mechanism 40 releases the bucket cover 21 to the metal barrel 20.

[0078] The grabbing or releasing operation of the grabbing mechanism 40 on the bucket cover 21 can be performed by operating the second end of the grabbing operation lever.

[0079] S3.4, the bolt positioning tool 60 is extracted, the bolt installation tool is inserted into the shielding container 10 through the second through hole 112, and the bolt installation tool is used to lock the bolts on the bucket cover 21 and the metal barrel 20, so as to lock the bucket cover 21 on the metal barrel 20.

[0080] When locking the bolts, after the bolt installation tool completes the locking of one bolt, the bolt installation tool drives the container shielding plug 11 to move along the circumference of the metal barrel 20 to the position of another bolt, locks the bolt, and then rotates to lock the next bolt, so as to lock all the bolts on the bucket cover 21 one by one.

[0081] In summary, the application is suitable for various nuclear facilities, suitable for various occasions in the nuclear facility field, especially for the collection, grouting preparation and safe operation of the sealing of the waste barrel of the high-dose rate radioactive waste generated in the site without automatic sealing device or automatic waste preparation production line; effectively reduce the investment of waste preparation production equipment, and realize the radiation protection of workers, reduce the radioactive harm to workers in the process of high-dose rate waste preparation.

[0082] The above is only an embodiment of the application, and does not limit the patent range of the application, and any equivalent structure or equivalent process transformation using the content of the specification and drawings, or direct or indirect application in other related technical fields, are also included in the patent protection range of the application.

Claims

1. A waste grout fixation device, characterized in that, The waste grouting fixing device comprises a shielding container, a container shielding plug for closing the shielding container, a metal barrel arranged in the shielding container, a barrel cover for closing the metal barrel, and a container adapter which is fitted on the shielding container and is openable and closable. The container adapter is in an open state when the shielding container receives radioactive waste and grouting. The container adapter is in a closed state after the shielding container receives radioactive waste and before grouting. The container adapter comprises a support for being mounted on the top of the shielding container and a shutter which is movably fitted on the support; the support is provided with a first interface and a second interface which are in communication; the first interface is opposite to the top of the shielding container and is in communication with the top opening of the shielding container; the second interface is located on the side of the first interface which is away from the shielding container and is used for positioning the container shielding plug; the shutter is movable and openable and closable in the first interface to close or open the top opening of the shielding container. The waste grouting fixing device further comprises a grouting shielding plug which is used for being fitted on the top opening of the shielding container during grouting; the grouting shielding plug is provided with a grouting passage which penetrates through the grouting shielding plug.

2. The waste grout fixation device of claim 1, wherein, The waste grouting fixing device further comprises a grabbing mechanism; the barrel cover is connected to one side of the container shielding plug through the grabbing mechanism, and the container shielding plug and the barrel cover are relatively rotatable.

3. The waste grout fixation device of claim 2, wherein, The grabbing mechanism comprises a grabbing operating rod and a grabbing main body which is connected to the first end of the grabbing operating rod. The container shielding plug is provided with a first through hole; the grabbing operating rod is arranged in the first through hole; the grabbing main body is located on one side of the container shielding plug; and the second end of the grabbing operating rod is located on the other side of the container shielding plug.

4. The waste grout fixation device of claim 2, wherein, The container shielding plug is provided with a second through hole; the second through hole is used for the screw positioning tool to pass through and is used for the screw to be fitted on the screw hole of the barrel cover; and the second through hole is also used for the screw installation tool to pass through and is used for the screw to be tightened or loosened.

5. A waste grout fixation device according to any one of claims 1-4, characterized in that The grouting passage comprises a grouting pipe which penetrates through the grouting shielding plug and a quick connector which is connected to the grouting pipe and is located on the surface of the grouting shielding plug which is away from the shielding container.

6. A waste grouting fixation method characterized by, The waste grouting fixing method comprises the following steps by using the waste grouting fixing device according to any one of claims 1-5: S1, the container adapter is opened on the top of the shielding container; after the radioactive waste is loaded into the metal barrel in the shielding container, the container adapter is closed to close the top of the shielding container; S2, the grouting device is connected to the shielding container; cement is injected into the metal barrel through the grouting device to cover the radioactive waste; S3, the container shielding plug and the barrel cover are hoisted to the top of the shielding container; the container adapter is opened; and the barrel cover and the container shielding plug are respectively mounted and fixed on the top of the metal barrel and the shielding container.

7. The waste grout fixation method according to claim 6, characterized by, Step S2 comprises: S2.1, the grouting shielding plug is hoisted to the container adapter; S2.2, the shutter of the container adapter is opened; the grouting shielding plug is released and positioned on the top of the shielding container. S2.3, connecting the grouting device with the grouting channel on the grouting shield plug, and performing cement grouting; S2.4, after grouting is completed, lifting the grouting shield plug away from the shield container, moving the baffle of the container adapter, and closing the top of the shield container.

8. The waste grout fixation method according to claim 6, characterized by, Step S3 includes: S3.1, after the grabbing mechanism on the container shield cover grabs the bucket cover, lifting the container shield cover to the top of the container adapter; S3.2, opening the baffle of the container adapter, releasing and positioning the container shield cover on the top of the shield container; S3.3, using a bolt positioning tool to align the threaded hole or bolt on the bucket cover with the flange hole on the top of the metal bucket, and releasing the bucket cover to the metal bucket by the grabbing mechanism; S3.4, using a bolt installation tool to lock the bolt on the bucket cover and the metal bucket.

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