Feeding, discharging, sampling and cleaning integrated device for particles and using method of feeding, discharging, sampling and cleaning integrated device

Abstract

The invention belongs to the technical field of coated particle preparation, and aims to solve the problems of high safety risk of manual operation and low consistency of manual operation in the loading, sampling, unloading and cleaning processes of high-temperature fluidized particles in a vertical deposition furnace. The invention discloses a loading, unloading, sampling and cleaning integrated device for particles and a using method.The device comprises a base, an automatic lifting mechanism is arranged on the side face of the base, a charging basket transferring platform is arranged above the base, and a furnace top cover transferring device, a furnace top cover cleaning device and a graphite dust cleaning device are installed on the base; a loading and unloading sampling cleaning mechanism is arranged in the middle of the base; according to the method, the device is used for loading, unloading, sampling and cleaning. According to the device, a full-automatic operation mode is adopted, the safety of operators is guaranteed, labor force is reduced, and the functions of automatic feeding, discharging, cleaning in the furnace and sampling are integrated, so that the device is compact, small in occupied area and capable of working in a limited space.

Description

Technical Field

[0001] The present application belongs to the technical field of coated particle preparation, and in particular relates to an integrated device for loading, unloading, sampling and cleaning particles and a method of use. Background Art

[0002] The high temperature gas-cooled reactor is an advanced nuclear reactor technology, one of the key technologies of which is to process the core nuclear fuel into spherical coated particles.

[0003] In industrial production, coated fuel particles can be prepared in a vertical deposition furnace using chemical vapor deposition. When preparing coated fuel particles, the material is first loaded into the vertical deposition furnace. When the preparation reaches a certain stage, sampling is performed to verify the product quality. Sampling is a crucial link. On the one hand, the sampling of loose pyrolytic carbon layer is carried out in a high-temperature vertical deposition furnace, and the safety of the sampling personnel and surrounding personnel must be ensured during the sampling operation; on the other hand, accurate and reliable sampling can ensure the accuracy of the experimental results and the stability of product quality. After the preparation is completed, the coated fuel particles are taken out of the furnace. In addition, a large amount of carbon black will be generated during the preparation process, and the carbon black must be cleaned up at the end.

[0004] At present, when loading, people carry the loading barrel and connect it with the loading pipe to realize the loading function; when sampling, people hold the grabbing part at the tail end of the sampler and go deep into the furnace to realize the sampling function; when unloading, people hold the unloading pipe and go deep into the furnace. At this time, the pressure in the pipe is negative, and the material can be sucked from the furnace into the barrel to realize the unloading function; when cleaning carbon black, people hold vacuum cleaners, brushes and other cleaning tools to realize the cleaning function. The above operations have certain safety risks. What is more important is that in order to complete the above operations, a lot of manpower is required, and the degree of automation is low.

[0005] Therefore, in order to solve the above problems and successfully complete the industrial production of spherical fuel elements for high-temperature gas-cooled reactors, it is urgently necessary to design and develop an integrated device for loading, unloading, sampling and cleaning of high-temperature fluidized particles in a vertical deposition furnace. Summary of the invention

[0006] The main purpose of the present application is to provide an integrated device for loading, unloading, sampling and cleaning of particles and a method of use, so as to solve the problems of high safety risks and low consistency of manual operation during the loading, sampling, unloading and cleaning of high-temperature fluidized particles in a vertical deposition furnace.

[0007] Another object of the present application is to provide an integrated device for loading, unloading, sampling and cleaning of particles and a method of use, so as to solve the problem of relying on manual operation and wasting manpower, and to realize fully automated operation of loading, unloading, sampling and cleaning in large-scale production processes.

[0008] In order to achieve the above objectives, this application provides the following technical solutions:

[0009] In the first aspect, the present application provides an integrated device for loading, unloading, sampling and cleaning of particles, comprising a base, an automatic lifting mechanism is provided on the side of the base, a barrel transfer platform is provided above the base, a furnace top cover transfer device, a furnace top cover cleaning device and a graphite dust cleaning device are installed on the base, and a loading and unloading sampling and cleaning mechanism is arranged in the middle of the base.

[0010] In some embodiments, the base includes a second layer frame and a first layer frame arranged up and down.

[0011] In some embodiments, the barrel transfer platform is installed on the second-level frame.

[0012] In some embodiments, the furnace top cover transfer device is installed below the second layer frame.

[0013] In some embodiments, the furnace top cover cleaning device is installed on the first layer frame.

[0014] In some embodiments, the furnace top cover transfer device is above the furnace top cover cleaning device.

[0015] In some embodiments, the sampling cup is arranged on the first layer of the rack.

[0016] In some embodiments, the graphite dust cleaning device is on the first layer frame.

[0017] In some embodiments, the loading, unloading, sampling and feeding mechanism includes a loading pipe, a unloading pipe, a sampling pipe and a purge pipe arranged vertically.

[0018] In some embodiments, the funnel is mounted on the first layer of the frame.

[0019] In some embodiments, the funnel is arranged above the sampling cup.

[0020] In a first aspect, the present application provides a method for using the integrated device for loading, unloading, sampling and cleaning of particles, comprising:

[0021] Step 1: Send the barrel filled with particles to the integrated device, the automatic lifting mechanism lifts the barrel, the barrel is docked to the barrel transfer platform by the automatic lifting mechanism, and the barrel transfer platform transfers the barrel to the loading position;

[0022] Step 2: the loading tube is inserted into the vertical deposition furnace, the material barrel is docked with the loading tube, and loading begins; after loading is completed, the loading tube is withdrawn, the material barrel returns to its original position, and then the coated particles are prepared in the vertical deposition furnace;

[0023] Step 3: When sampling is required after the coated particles are prepared, the sampling tube goes deep into the vertical deposition furnace. After the sampling is completed, the sampling tube delivers the sample taken out into the sampling cup;

[0024] Step 4: When unloading, the unloading pipe goes deep into the vertical deposition furnace to start unloading, and then the purge pipe goes deep into the furnace to purge;

[0025] Step 5: When cleaning the furnace top cover, the integrated device extracts the furnace cover and enters the cleaning station to start cleaning.

[0026] Compared with the prior art, the integrated device for loading, unloading, sampling and cleaning of particles and the method of use provided by the present application have the following beneficial effects:

[0027] This device adopts a fully automatic operation mode, which not only ensures the safety of operators but also reduces labor.

[0028] The device integrates the functions of automatic feeding, discharging, furnace cleaning and sampling into one, making the device compact, small in footprint and able to operate in limited space.

[0029] Through highly automated technical means, the entire process of particle loading, unloading, sampling and cleaning does not require manual intervention, saving manpower. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solution of the present application, the following is a brief introduction to the drawings required for the technical description.

[0031] Figure 1 A schematic diagram of the structure of the integrated device for loading, unloading, sampling and cleaning of particles provided in the present application, wherein the dotted line shows the obscured structure;

[0032] Figure 2 A top view of the arrangement position of the furnace top cover cleaning device provided in this application;

[0033] Figure 3 A left side view of the arrangement position of the furnace top cover cleaning device provided for this application;

[0034] Figure 4 A schematic diagram of the motor provided in this application driving the screw rod to move the barrel upward;

[0035] Figure 5 A schematic diagram of the motor provided in this application driving the screw rod to move the barrel downward;

[0036] Figure 6 A top view of the furnace top cover cleaning device provided for this application;

[0037] Figure 7 A front view of the furnace top cover cleaning device provided for this application;

[0038] Figure 8 A top view of the graphite dust cleaning device provided in the present application when closed;

[0039] Fig. 9 A top view of the graphite dust cleaning device provided in the present application when it is opened;

[0040] Fig.10 A flow chart of the method of using the integrated device for loading, unloading, sampling and cleaning of particles provided in this application.

[0041] Description of reference numerals:

[0042] 1. First-layer frame; 2. Second-layer frame; 3. Automatic lifting mechanism; 4. Material barrel; 5. Material barrel transfer platform; 6. Loading pipe; 7. Unloading pipe; 8. Sampling pipe; 9. Purge pipe; 10. Furnace top cover transfer device; 11. Furnace top cover cleaning device; 12. Graphite dust cleaning device; 13. Sampling cup; 14. Funnel. DETAILED DESCRIPTION

[0043] The following is further explained in detail through specific implementation methods.

[0044] For ease of understanding, this application first briefly introduces the coated particle production stage. The vertical deposition furnace is used to produce coated particles, and the key component in the furnace is the fluidizing tube. During the entire production stage, it is divided into the following stages: loading stage (i.e. loading the uncoated particles into the vertical deposition furnace), sampling stage (taking out the produced products from the vertical deposition furnace for sampling and testing), unloading stage (taking out the produced coated particles from the vertical deposition furnace and putting them into a container), and cleaning stage (cleaning up the carbon black generated during the production process).

[0045] like Figure 1 As shown, the present application provides an integrated device for loading and unloading, sampling and cleaning of particles, which improves the automation of loading and unloading, sampling and cleaning in the process of producing coated particles, and reduces the safety risk of manual operation during sampling. The device is placed above a vertical deposition furnace with a depth of about 2m, and includes an automatic lifting mechanism 3, a barrel transfer platform 5, a loading and unloading sampling and feeding mechanism ( Figure 1 6, 7, 8 and 9), cleaning agencies ( Figure 1 10, 11 and 12 in the figure). The device specifically includes a first-layer frame 1, a second-layer frame 2, an automatic lifting mechanism 3, a barrel 4, a barrel transfer platform 5, a loading pipe 6, a discharge pipe 7, a sampling pipe 8, a purge pipe 9, a furnace top cover transfer device 10, a furnace top cover cleaning device 11, a graphite dust cleaning device 12, a sampling cup 13, and a funnel 14.

[0046] The base of the device is composed of two layers of frames, including a first layer frame 1 and a second layer frame 2, and the second layer frame 2 is arranged above the first layer frame 1. An automatic lifting mechanism 3 is welded on the left side of the base, and the automatic lifting mechanism 3 has a clamping claw that can grab a barrel 4.

[0047] In one embodiment, the automatic lifting mechanism 3 is welded on the second-layer frame 2 , specifically, welded on the left side of the second-layer frame 2 .

[0048] A furnace top cover cleaning device 11, a graphite dust cleaning device 12, and a sampling cup 13 are welded on the first-layer frame 1. A barrel transfer platform 5 with a clamp is welded on the second-layer frame 2. A furnace top cover extraction device 10 is welded below the second-layer frame 2. The loading and unloading sampling and feeding mechanism is located at the center of the frame and is equipped with four vertical pipes, namely a loading pipe 6, a unloading pipe 7, a sampling pipe 8, and a purge pipe 9. In the loading stage of coated particle production, the loading pipe 6 goes deep into the vertical deposition furnace and then docks with the barrel 4. At this time, the uncoated particles are loaded into the vertical deposition furnace from the barrel 4 through the loading pipe 6. In the sampling stage of coated particle production, the sampling tube 8 goes deep into the vertical deposition furnace for sampling. In the unloading stage of coated particles, the unloading pipe 7 goes deep into the vertical deposition furnace, and the coated particles are loaded into the barrel from the vertical deposition furnace through the unloading pipe 7. In the coated particle cleaning stage, after production is completed, the purge pipe 9 penetrates into the vertical deposition furnace to purge the carbon black produced in the furnace.

[0049] like Figure 2 and Figure 3 As shown, the furnace top cover cleaning device 11 is located in the middle of the first layer frame 1, and the funnel 14 and the sampling cup 13 are located on the side of the first layer frame 1.

[0050] like Figure 4 and Figure 5 As shown, the automatic lifting mechanism 3 is similar to a screw slide, and the motor drives the screw to move up and down. Figure 4 It shows that the motor drives the screw rod to move the barrel upward. Figure 5 It shows that the motor drives the screw rod to move the barrel downward, and the shear head is the moving direction.

[0051] like Figure 6 and Figure 7 As shown, the furnace top cover is removed and placed on the furnace top cover cleaning device 11. A brush is erected at the center of the device and a brush is also installed on the bottom. The motor drives the two brushes to rotate to clean the carbon black on the furnace top cover. Figure 6 This is a simplified top view of the furnace top cover cleaning device. The shaded part is where the brush is located. The brush can be driven by the motor to Figure 7 The arrow direction rotates around the center. In addition, the device is connected to an exhaust pipe, and the cleaned carbon black is discharged through the exhaust pipe by a fan.

[0052] like Figure 8 and Fig. 9 As shown, the graphite dust cleaning device 12 is two semicircles, and the inner sides of the two semicircles are equipped with brushes. The shaded part in the figure is the position of the brushes. The two semicircles can not only be moved according to the Fig. 9 The arrow shown is open and can also be closed. A fluidizing tube is placed in the middle area. The tightness of the graphite dust cleaning device is adjusted by the slide rail according to the diameter of the fluidizing tube. When the fluidizing tube is extracted outward in the vertical direction of the paper surface, the carbon black on the outside of the fluidizing tube will be brushed off by the brush. At the same time, there are small holes on the inner wall of the device, which are connected to the exhaust pipe. The carbon black brushed off by the fan will be discharged from the exhaust pipe through the small holes.

[0053] The furnace top cover transfer device 10 is similar to a buckle design, and the device can just clamp the groove part of the furnace cover to realize the transfer of the material barrel.

[0054] How to use automatic feeding: When the barrel 4 is loaded with particles, the clamp on the automatic lifting mechanism 3 grabs the barrel 4 and lifts it. At this time, the barrel transfer platform 5 rotates, and uses its attached clamp to grab the barrel 4. Then the loading pipe 6 descends deep into the high-temperature furnace. The barrel transfer platform 5 rotates again to make the barrel 4 and the loading pipe 6 on the same vertical line. The loading pipe 6 pushes open the barrel cover to realize automatic feeding of particles.

[0055] Automatic sampling method of use: the sampling tube 8 is designed with an opening at the bottom and the side, and a high-temperature resistant ball made of zirconium oxide is placed inside. The ball can strictly block the lower opening due to gravity. The temperature in the furnace during sampling is ≤1300℃. When sampling is required, the servo motor drives the sampling rod to insert into the vertical deposition furnace for sampling. The depth in the furnace is ≤1900mm. The sampling time is about 2 to 3s. At this time, the particles in the furnace enter from the side of the sampling tube 8; when the sampling is completed, the sampling tube 8 is lifted until the bottom is connected to the funnel 14. At this time, the ball at the bottom of the sampling rod is pushed open, and the particles in the rod enter the sampling cup 13 below through the funnel 14.

[0056] How to use automatic unloading: The temperature in the furnace during unloading is ≤300℃. When unloading is required, the servo motor drives the unloading rod to go deep into the high-temperature furnace. The particles are sucked out through the unloading rod by vacuum suction and finally loaded into the barrel 4. The head of the unloading rod is equipped with a detachable structure to facilitate the replacement of different unloading heads.

[0057] How to use the cleaning function: In the process of producing particles, a large amount of carbon black will be attached to the surface of each component in the vertical deposition furnace. After a production cycle, the carbon black attached to the surface of each component in the vertical deposition furnace needs to be cleaned. The integrated device is equipped with a furnace cover transfer and cleaning function. The furnace top cover cleaning device 11 is equipped with a brush. After a simple cleaning of the furnace cover, it is transferred to a fixed workstation using the furnace cover transfer device 10. After production is completed, the fluidizing tube placed in the furnace needs to be extracted for cleaning. During the extraction process, the graphite dust cleaning device 12 of the device is equipped with a brush, which can be cleaned while extracting. At the same time, it is equipped with a purge pipeline. The cleaning pipe also uses a servo motor. The cleaning head adopts a surrounding purge structure, which can effectively blow away the dust inside the fluidizing tube.

[0058] In addition, based on the above-mentioned integrated device for loading, unloading, sampling and cleaning of particles, the present application also provides a method for using the integrated device for loading, unloading, sampling and cleaning of particles, comprising the following steps:

[0059] Step 1: A loading device other than the device delivers the 3.6L container, the 10L container and the sampling cup 13 to the integrated loading, unloading, sampling and cleaning device, and the automatic lifting mechanism 3 on the integrated loading, unloading, sampling and cleaning device delivers the container to the loading position.

[0060] Step 2: The loading tube 6 is inserted into the vertical deposition furnace, the container is docked with the loading tube 6, and loading begins. After loading is completed, the loading tube 6 is withdrawn, the container returns to its original position, and then the coated particles are prepared in the vertical deposition furnace.

[0061] Step 3: When sampling is required after the coated particles are prepared, the sampling tube 8 goes deep into the vertical deposition furnace. After the sampling is completed, the sampling tube 8 sends the sample taken out into the sampling cup, and the transfer mechanism grabs the sampling cup 13 and transfers it to the sampling cup transfer station.

[0062] Step 4: When unloading, the unloading pipe 7 goes deep into the vertical deposition furnace to start unloading, and then the purge pipe 9 goes deep into the furnace to purge.

[0063] Step 5: When cleaning the furnace top cover, the integrated device extracts the furnace cover and enters the cleaning station to start cleaning.

[0064] The above description is only a specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by any technician familiar with the technical field within the technical scope disclosed in the present application should be covered within the protection scope of the present application.

Claims

1. An integrated device for loading, unloading, sampling and cleaning of particles, characterized in that: The invention comprises a base, wherein an automatic lifting mechanism (3) is arranged on the side of the base, a barrel transfer platform (5) is arranged above the base, a furnace top cover transfer device (10), a furnace top cover cleaning device (11) and a graphite dust cleaning device (12) are installed on the base, and a loading and unloading material sampling and feeding mechanism is arranged in the middle of the base.

2. The integrated device for loading, unloading, sampling and cleaning of particles according to claim 1, characterized in that: The base comprises a second layer frame (2) and a first layer frame (1) which are arranged vertically.

3. The integrated device for loading, unloading, sampling and cleaning of particles according to claim 2, characterized in that: The barrel transfer platform (5) is installed on the second layer frame (2).

4. The integrated device for loading, unloading, sampling and cleaning of particles according to claim 2, characterized in that: The furnace top cover transfer device (10) is installed below the second layer frame (2).

5. The integrated device for loading, unloading, sampling and cleaning of particles according to claim 2, characterized in that: The furnace top cover cleaning device (11) is installed on the first layer frame (1), and the furnace top cover transfer device (10) is installed above the furnace top cover cleaning device (1).

6. The integrated device for loading, unloading, sampling and cleaning of particles according to claim 2, characterized in that: The graphite dust cleaning device (12) is on the first layer frame (1).

7. The integrated device for loading, unloading, sampling and cleaning of particles according to claim 1, characterized in that: The loading, unloading, sampling and feeding mechanism comprises a loading pipe (6), a unloading pipe (7), a sampling pipe (8) and a purge pipe (9) which are arranged vertically.

8. The integrated device for loading, unloading, sampling and cleaning of particles according to claim 1, characterized in that: The funnel (14) is mounted on the first layer frame (1).

9. The integrated device for loading, unloading, sampling and cleaning of particles according to claim 8, characterized in that: The funnel (14) is arranged above the sampling cup (13).

10. A method for using the integrated device for loading, unloading, sampling and cleaning of particles according to any one of claims 1 to 9, characterized in that: include: Step 1: The material barrel containing particles is delivered to the integrated device, the automatic lifting mechanism (3) lifts the material barrel (4), the material barrel (4) is docked to the material barrel transfer platform (5) by the automatic lifting mechanism (3), and the material barrel transfer platform (5) transfers the material barrel (4) to the loading position; Step 2: the charging tube (6) is inserted into the vertical deposition furnace, the material barrel (4) is docked with the charging tube (6), and charging begins; after charging is completed, the charging tube (6) is withdrawn, the material barrel (4) returns to its original position, and then the vertical deposition furnace begins to prepare coated particles; Step 3: When sampling is required after the coated particles are prepared, the sampling tube (8) is inserted into the vertical deposition furnace. After the sampling is completed, the sampling tube (8) delivers the sample taken out into the sampling cup; Step 4: When unloading, the unloading pipe (7) goes deep into the vertical deposition furnace to start unloading, and then the purge pipe (9) goes deep into the furnace to purge; Step 5: When cleaning the furnace top cover, the integrated device extracts the furnace cover and enters the cleaning station to start cleaning.

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