Mechanical auxiliary chemical decontamination device and use method thereof

Abstract

The invention belongs to the technical field of chemical decontamination of nuclear power stations, and relates to a mechanical auxiliary chemical decontamination device and a use method thereof. Comprising a roller grinding machine, a grinding material and a to-be-decontaminated part are added into a roller of the roller grinding machine, the roller grinding machine is started to enable the grinding material and the to-be-decontaminated part to generate relative vibration, then friction decontamination is conducted on the to-be-decontaminated part through the grinding material, and a large amount of dirt can be preliminarily removed through physical decontamination; and the amount of decontamination liquid required by chemical decontamination is reduced, the treatment time is shortened, and chemical pollution is reduced. The decontamination solution box is communicated with the spraying head through a conveying pipeline, a decontamination circulating pump is arranged on the conveying pipeline, and the decontamination solution is pumped out of the decontamination solution box through driving of the decontamination circulating pump, conveyed to the spraying head through the conveying pipeline and directly sprayed to a part to be decontaminated in the roller for chemical decontamination. And the decontamination solution can take away dust generated by friction, so that dust pollution is avoided. By combining the characteristics of chemical and physical decontamination, the decontamination efficiency is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of nuclear power plant chemical decontamination, and relates to a mechanically assisted chemical decontamination device and a use method thereof. Background Art

[0002] Nuclear power is a clean energy source with the characteristics of stability, high efficiency and scalability. Pressurized water reactors have the advantages of compact structure, small size, high power density, deep average burnup, radioactive fission products are not easy to escape, good power self-stabilization and self-adjustment characteristics and high safety and reliability. During the operation of a nuclear reactor, the corrosion products produced in the primary circuit system will migrate to the core for activation, forming activated corrosion products, and gradually deposit on the surface of the primary circuit equipment with the circulation of the coolant. Under the action of high temperature and high pressure, they exist in the form of metal oxide film. The activated corrosion product film on the surface of the equipment will cause radiation hazards to equipment maintenance personnel and system operators, and decontamination treatment is required. Efficiently removing the oxide film and dirt on the metal surface and reducing the radiation dose are the key to quickly carrying out equipment maintenance.

[0003] The chemical decontamination process currently used generally alternates between potassium permanganate oxidation and reduction decontamination. The purpose of potassium permanganate oxidation is to convert the trivalent chromium in the oxide film into soluble hexavalent chromium, and the purpose of reduction decontamination is to dissolve the oxide film and allow elements such as Fe, Ni, and Cr to enter the decontamination solution. Chemical decontamination often has disadvantages such as long decontamination time. In order to improve the efficiency of chemical decontamination, ultrasonic vibration is often used to assist chemical decontamination, but the chemical decontamination time is still relatively long.

[0004] The oxide layer on the surface of the equipment can also be removed by physical grinding, but simple grinding still has the problem of low efficiency and dust pollution.

[0005] In summary, the existing methods for removing the oxide layer on the surface of the primary circuit equipment of a nuclear reactor have the problems of low efficiency and dust pollution. Summary of the invention

[0006] The purpose of the present invention is to provide a mechanically assisted chemical decontamination device and a method of using the same to solve the technical problems of low efficiency and dust pollution in the method for removing the oxide layer on the surface of the primary loop equipment of a nuclear reactor. The present invention has high efficiency and low pollution in removing the oxide layer on the surface of the primary loop equipment of the reactor.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions: The invention discloses a mechanically assisted chemical decontamination device, comprising a drum grinder, abrasives are built in the drum of the drum grinder, a spray head is arranged on the top of the drum of the drum grinder, a liquid discharge port is opened on the drum of the drum grinder, the liquid discharge port is connected to a decontamination solution tank, the decontamination solution tank is connected to the spray head through a conveying pipeline, and a decontamination circulation pump is arranged on the conveying pipeline.

[0008] Furthermore, the drain port is located at the bottom of the drum grinder, and a filter screen is provided on the drain port.

[0009] Furthermore, the diameter of the filter holes of the filter screen is smaller than the diameter of the abrasive.

[0010] Furthermore, the liquid discharge port is connected to the decontamination solution tank via an outflow pipe, and a valve is provided on the outflow pipe.

[0011] Furthermore, the decontamination solution tank is provided with a desalted water adding pipe, a decontamination liquid adding pipe and a decontamination waste liquid discharging component.

[0012] Furthermore, an electric heating component and a temperature control component are provided in the decontamination solution tank, and the temperature control component is electrically connected to the electric heating component.

[0013] Furthermore, the decontamination waste liquid discharge component includes a decontamination waste liquid discharge pipe, a valve is provided on the decontamination waste liquid discharge pipe, and the decontamination waste liquid discharge pipe is connected to the decontamination solution tank.

[0014] Furthermore, the connection point between the decontamination waste liquid discharge pipe and the decontamination solution tank is located at the bottom of the decontamination solution tank.

[0015] Furthermore, a stirring component is provided in the decontamination solution tank.

[0016] Based on the above structure, the present invention also discloses a method for using a mechanically assisted chemical decontamination device, comprising the following steps: Adding abrasives and the parts to be decontaminated into the drum of a drum grinder, starting the drum grinder, causing relative vibration between the abrasives and the parts to be decontaminated, and then rubbing and decontaminating the parts to be decontaminated by the abrasives; A certain amount of decontamination liquid is added to the decontamination solution tank, and the decontamination liquid in the decontamination solution tank is transported to the spray head through the transport pipeline by the decontamination circulation pump, and the decontamination liquid is sprayed into the drum of the drum grinder through the spray head, and the decontamination liquid is used to chemically decontaminate the parts to be decontaminated, and the dirt enters the decontamination solution tank through the discharge port along with the decontamination liquid; After the decontamination is completed, the decontamination liquid in the decontamination solution tank is drained, a certain amount of desalted water is added, and the desalted water is transported to the spray head by the decontamination circulation pump. The desalted water is sprayed into the drum of the drum grinder through the spray head, and the desalted water is used to rinse the parts to be decontaminated.

[0017] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention includes a drum grinder, and abrasives and parts to be decontaminated are added into the drum of the drum grinder. The drum grinder is started to generate relative vibration between the abrasives and the parts to be decontaminated, and then the parts to be decontaminated are decontaminated by friction with the abrasives. Physical decontamination can initially remove a large amount of dirt, thereby reducing the amount of decontamination liquid and processing time required for subsequent chemical decontamination, reducing costs, and reducing chemical pollution. The decontamination solution tank is connected to the spray head through a conveying pipeline, and a decontamination circulation pump is provided on the conveying pipeline. The decontamination circulation pump is driven to extract the decontamination solution from the decontamination solution tank, and convey it to the spray head through the conveying pipeline, and directly spray it onto the parts to be decontaminated in the drum for chemical decontamination. At the same time, the decontamination solution can take away the dust generated by friction to avoid dust pollution. The present invention combines the characteristics of chemical and physical decontamination, grinds the metal surface contaminants with abrasives, corrodes the metal surface contaminants with chemical solvents and dissolves the metal surface contaminant particles generated by the abrasives, so that the oxide film on the metal surface is removed more quickly under physical grinding and dissolution of the chemical solution, and the friction of the abrasive can make the solvent penetrate deeper into the oxide film, thereby accelerating the removal of oxide film contaminants.

[0018] 2. The drain port of the present invention is located at the bottom of the drum grinder to facilitate the discharge of the decontamination solution. A filter screen is provided on the drain port to ensure that the abrasive is not discharged while the decontamination solution is discharged.

[0019] 3. The filter hole diameter of the filter screen of the present invention is smaller than the diameter of the abrasive, thereby preventing the abrasive from being discharged.

[0020] 4. The present invention controls the electric heating component through the temperature control component to heat the decontamination solution in the decontamination solution box, thereby ensuring that the decontamination solution is at a set temperature, which is beneficial to improving the chemical decontamination speed.

[0021] 5. The method of the present invention adds the abrasive and the part to be decontaminated into the drum of the drum grinder, starts the drum grinder, causes relative vibration between the abrasive and the part to be decontaminated, and then rubs and decontaminates the part to be decontaminated by the abrasive. The drum grinder causes relative vibration and friction between the abrasive and the part to be decontaminated, effectively removing pollutants on the metal surface. At the same time, the friction of the abrasive can make the solvent penetrate deeper into the oxide film, providing a good foundation for subsequent chemical decontamination, thereby accelerating the removal of oxide film pollutants. In addition, physical decontamination can initially remove a large amount of dirt, thereby reducing the amount of decontamination liquid and processing time required for subsequent chemical decontamination, reducing costs, and reducing chemical pollution; in the decontamination solution tank A certain amount of decontamination liquid is added, the decontamination liquid in the decontamination solution tank is transported to the spray head through a transport pipe by a decontamination circulation pump, the decontamination liquid is sprayed into the drum of the drum grinder by the spray head, the decontamination liquid is used to chemically decontaminate the parts to be decontaminated, and the dirt enters the decontamination solution tank through a discharge port along with the decontamination liquid. The dual effects of physical friction and chemical dissolution are combined to significantly improve the decontamination efficiency and effect; after the decontamination is completed, the decontamination liquid in the decontamination solution tank is discharged, a certain amount of desalted water is added, the desalted water is transported to the spray head by a decontamination circulation pump, the desalted water is sprayed into the drum of the drum grinder by the spray head, the parts to be decontaminated are rinsed by the desalted water to reduce the residual radioactive dirt inside them. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 The present invention is a flow chart of the method.

[0023] Among them: 1. Decontamination solution tank; 2. Decontamination circulation pump; 3. Delivery pipeline; 4. Spray head; 5. Drum grinder; 6. Abrasive; 7. Parts to be decontaminated; 8. Outflow pipe; 9. Desalted water addition pipe; 10. Decontamination liquid addition pipe; 11. Electric heating component; 12. Decontamination waste liquid discharge pipe; 13. Filter. DETAILED DESCRIPTION

[0024] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0025] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0026] The present invention is further described in detail below in conjunction with the accompanying drawings: See also Figure 1 The present invention discloses a mechanically assisted chemical decontamination device, comprising a drum grinder 5, wherein an abrasive 6 is built in the drum of the drum grinder 5, the abrasive 6 and the part to be decontaminated 7 are added into the drum of the drum grinder 5, and the drum grinder 5 is started to generate relative vibration between the abrasive 6 and the part to be decontaminated 7, and then the part to be decontaminated 7 is decontaminated by friction with the abrasive 6. A spray head 4 is provided on the top of the drum of the drum grinder 5, and a liquid discharge port is provided on the drum of the drum grinder 5, and the liquid discharge port is connected to a decontamination solution tank 1, and the decontamination solution tank 1 is connected to the spray head 4 through a conveying pipe 3, and a decontamination circulation pump 2 is provided on the conveying pipe 3. The decontamination circulation pump 2 is driven to draw the decontamination solution from the decontamination solution tank 1, and convey it to the spray head 4 through the conveying pipe 3, and directly spray it onto the part to be decontaminated 7 in the drum for chemical decontamination. At the same time, the decontamination solution can take away the dust generated by friction to avoid dust pollution. The present invention combines the characteristics of chemical and physical decontamination, grinds the metal surface contaminants with abrasives, corrodes the metal surface contaminants with chemical solvents and dissolves the metal surface contaminant particles generated by the abrasives, so that the oxide film on the metal surface is removed more quickly under physical grinding and dissolution of the chemical solution, and the friction of the abrasive can make the solvent penetrate deeper into the oxide film, thereby accelerating the removal of oxide film contaminants.

[0027] Embodiment 1: See also Figure 1 The present embodiment discloses a mechanically assisted chemical decontamination device, including a drum grinder 5, abrasive 6 is built in the drum of the drum grinder 5, a spray head 4 is provided on the top of the drum of the drum grinder 5, a drain port is opened on the drum of the drum grinder 5, the drain port is connected to a decontamination solution tank 1, the decontamination solution tank 1 is connected to the spray head 4 through a conveying pipe 3, and a decontamination circulation pump 2 is provided on the conveying pipe 3.

[0028] Preferably, the drain port is located at the bottom of the drum grinder 5 to facilitate the discharge of the decontamination solution. A filter screen 13 is provided on the drain port to ensure that the abrasive 6 is not discharged while the decontamination solution is discharged.

[0029] Preferably, the filter hole diameter of the filter screen 13 is smaller than the diameter of the abrasive 6 to prevent the abrasive 6 from being discharged.

[0030] Preferably, the liquid discharge port is connected to the decontamination solution tank 1 via an outflow pipe 8 , and a valve is provided on the outflow pipe 8 .

[0031] Preferably, the decontamination solution tank 1 is provided with a desalted water adding pipe 9, a decontamination liquid adding pipe 10 and a decontamination waste liquid discharging component, and desalted water is added into the decontamination solution tank 1 through the desalted water adding pipe 9, and decontamination liquid is added into the decontamination solution tank 1 through the decontamination liquid adding pipe 10. After decontamination is completed, the decontamination solution in the decontamination solution tank 1 is discharged through the decontamination waste liquid discharging component.

[0032] Preferably, an electric heating component 11 and a temperature control component are provided in the decontamination solution tank 1. The temperature control component is electrically connected to the electric heating component 11. The temperature control component controls the electric heating component 11 to heat the decontamination solution in the decontamination solution tank 1 to ensure that the decontamination solution is at a set temperature, which is beneficial to improving the chemical decontamination speed.

[0033] Preferably, the decontamination waste liquid discharge component comprises a decontamination waste liquid discharge pipe 12 , a valve is provided on the decontamination waste liquid discharge pipe 12 , and the decontamination waste liquid discharge pipe 12 is connected to the decontamination solution tank 1 .

[0034] Preferably, the connection between the decontamination waste liquid discharge pipe 12 and the decontamination solution tank 1 is located at the bottom of the decontamination solution tank 1 .

[0035] Preferably, a stirring component is provided in the decontamination solution tank 1 .

[0036] Embodiment 2: The present embodiment discloses a mechanically assisted chemical decontamination device, comprising a drum grinder 5 and a decontamination solution tank 1 disposed at the lower part thereof, wherein an abrasive 6 is placed in the drum grinder 5; a decontamination solution tank 1 is provided with a desalted water addition pipe 9 and a decontamination liquid addition pipe 10 at the upper part thereof, and a decontamination waste liquid discharge pipe 12 at the bottom thereof; the decontamination solution tank 1 is connected to a decontamination circulation pump 2 and a spray head 4 through a pipeline, and the spray head 4 is arranged at the upper part of the drum grinder 5; an electric heating component 11 and corresponding temperature control components are also provided in the decontamination solution tank 1.

[0037] The method of using the device of the present invention is as follows: Place the part to be decontaminated 7 in the drum grinder 5, and load corundum abrasive into the drum grinder 5; turn on the power of the drum grinder 5, adjust the vibration frequency of the drum grinder 5, so that the abrasive 6 and the part to be decontaminated 7 have relative vibration, then add the chemical decontaminant to the decontamination solution tank through the decontamination liquid adding pipe 10, add decontamination water to the required liquid level through the decontamination water adding pipe 9, start the electric heating component 11, and heat the solution to the required temperature. Start the decontamination circulation pump 2 to spray the decontamination liquid in the decontamination solution tank 1 through the spray head 4 to the surface of the part to be decontaminated 7 for decontamination. After reaching the required decontamination standard, discharge the waste liquid through the decontamination waste liquid discharge pipe 12 at the bottom, then add a certain amount of decontamination water to the decontamination solution tank 1 through the decontamination water adding pipe 9, and rinse the part to be decontaminated 7 with water.

[0038] Preferably, the vibration frequency of the drum grinder 5 can be adjusted according to the actual situation of the oxide film on the surface of the part 7 to be decontaminated and the degree of dirtiness, so that the activated corrosion products on the surface of the part 7 to be decontaminated can be efficiently removed through the friction of the abrasive 6 and the dissolution reaction of the chemical solvent.

[0039] Preferably, during the decontamination process, the flow rate of the decontamination circulation pump 2 and the angle and spraying pressure of the spray head 4 can be adjusted so that the waste generated after decontamination can be better brought into the decontamination solution tank 1.

[0040] Preferably, the abrasive 6 is made of brown corundum, which can effectively grind the part to be cleaned 7. The particle size of the abrasive should be selected according to the degree of dirt on the surface of the part to be cleaned. The heavier the surface dirtiness, the smaller the abrasive particle size should be.

[0041] Preferably, the mesh size of the filter screen 13 at the bottom of the drum grinder should be smaller than the diameter of the abrasive 6 to prevent the abrasive 6 from leaking out and to enable the cleaning liquid to be discharged as smoothly as possible.

[0042] Embodiment three: The present embodiment discloses a mechanically assisted chemical decontamination device, comprising a drum grinder 5, wherein a part to be decontaminated 7 and an abrasive 6 are placed together in the drum grinder 5; a spray head 4 is installed on the upper part of the drum grinder 5, and the spray head 4 is used to spray a decontamination liquid evenly on the surface of the part to be decontaminated 7; a decontamination circulation pump 2 is used to transport the chemical decontamination liquid in a decontamination solution tank 1 to the spray head 4 through a transport pipe 3; decontamination water is added to the decontamination solution tank 1 through a decontamination water adding pipe 9, and the decontamination liquid is added to the decontamination solution tank 1 through a decontamination liquid adding pipe 10. A decontamination solution tank 1 is added and configured to a required concentration. The decontamination solution tank 1 also receives the decontamination solution from the drum grinder 5. The decontamination solution in the drum grinder 5 flows into the decontamination solution tank 1 through the filter screen 13 and the outflow pipe 8. The electric heating component 11 connected to the decontamination solution tank 1 is used to heat the decontamination solution to provide the required decontamination temperature. The decontamination waste liquid discharge pipe 12 is used to discharge the decontamination liquid after the decontamination is completed, and the drum grinder 5 is rinsed with desalted water to reduce the residual radioactive contaminants inside it.

[0043] Preferably, the vibration frequency of the drum grinder 5 can be adjusted, and the activated corrosion products on the surface of the to-be-decontaminated component 7 with different degrees of dirtiness can be efficiently removed through the friction of the abrasive 6 and the dissolution reaction of the chemical solvent.

[0044] Preferably, the flow rate of the decontamination circulation pump 2 and the angle and spraying pressure of the spray head 4 are adjustable, so that the waste generated after decontamination can be better brought into the decontamination solution tank 1, reducing the residual radioactive waste inside the drum grinder 5.

[0045] Preferably, the abrasive 6 is made of brown corundum, which can effectively grind the part 7 to be cleaned. The particle size of the abrasive should be based on the dirtiness of the surface of the part to be cleaned. The heavier the surface dirtiness, the smaller the abrasive particle size should be.

[0046] Preferably, the mesh size of the filter screen 13 at the bottom of the drum grinder should be smaller than the diameter of the abrasive 6 to prevent the abrasive 6 from leaking out and to enable the cleaning liquid to be discharged as smoothly as possible.

[0047] The present invention starts the drum grinder 5 and utilizes the combined effect of the abrasive 6 and the chemical decontaminant therein to decontaminate the component 7 to be decontaminated, thereby effectively improving the decontamination efficiency of the workpiece.

[0048] The present invention adopts a process combining chemical solvent and physical abrasive grinding, which is easy to implement on site, realizes the rapid removal of the oxide layer on the surface of the primary circuit equipment, and can greatly reduce the chemical decontamination time of the primary circuit equipment.

[0049] Based on the above structure, the present invention also discloses a method for using the mechanically assisted chemical decontamination device, see Figure 2 , including the following steps: S1. Add the abrasive 6 and the part to be decontaminated 7 into the drum of the drum grinder 5, start the drum grinder 5, make the abrasive 6 and the part to be decontaminated 7 vibrate relative to each other, and then use the abrasive 6 to rub and decontaminate the part to be decontaminated 7. The drum grinder 5 makes the abrasive 6 and the part to be decontaminated 7 vibrate relative to each other and rub relative to each other, so as to effectively remove the pollutants on the metal surface. At the same time, the friction of the abrasive can make the solvent penetrate into the oxide film better, providing a good foundation for the subsequent chemical decontamination, thereby accelerating the removal of the oxide film pollutants. In addition, physical decontamination can initially remove a large amount of dirt, thereby reducing the amount of decontamination liquid and processing time required for the subsequent chemical decontamination, reducing costs, and reducing chemical pollution; S2. Add a certain amount of decontamination liquid into the decontamination solution tank 1, use the decontamination circulation pump 2 to transport the decontamination liquid in the decontamination solution tank 1 to the spray head 4 through the conveying pipe 3, spray the decontamination liquid into the drum of the drum grinder 5 through the spray head 4, and use the decontamination liquid to chemically decontaminate the component 7 to be decontaminated. The dirt enters the decontamination solution tank 1 through the discharge port with the decontamination liquid. The dual effects of physical friction and chemical dissolution can significantly improve the decontamination efficiency and effect; S3. After the decontamination is completed, the decontamination liquid in the decontamination solution tank 1 is discharged, a certain amount of desalted water is added, and the decontamination circulating pump 2 is used to transport the desalted water to the spray head 4, and the desalted water is sprayed into the drum of the drum grinder 5 through the spray head 4, and the desalted water is used to rinse the component to be decontaminated 7 to reduce the residual radioactive dirt inside it.

[0050] Embodiment 4: This embodiment discloses a method for using a mechanically assisted chemical decontamination device, see Figure 2 , including the following steps: S1. Add the abrasive 6 and the part to be decontaminated 7 to the drum of the drum grinder 5, start the drum grinder 5, so that the abrasive 6 and the part to be decontaminated 7 generate relative vibration, and then the abrasive 6 is used to rub and decontaminate the part 7; S2. Add a certain amount of decontamination liquid into the decontamination solution tank 1, use the decontamination circulation pump 2 to transport the decontamination liquid in the decontamination solution tank 1 to the spray head 4 through the delivery pipe 3, spray the decontamination liquid into the drum of the drum grinder 5 through the spray head 4, and use the decontamination liquid to chemically decontaminate the component 7 to be decontaminated, and the dirt enters the decontamination solution tank 1 through the drain port along with the decontamination liquid; Preferably, a certain amount of decontamination liquid is added into the decontamination solution tank 1, and a certain amount of desalted water is added at the same time, and the concentration of the decontamination solution is adjusted by the desalted water.

[0051] S3. After the decontamination is completed, the decontamination liquid in the decontamination solution tank 1 is discharged, a certain amount of desalted water is added, and the decontamination water is transported to the spray head 4 by the decontamination circulation pump 2. The desalted water is sprayed into the drum of the drum grinder 5 through the spray head 4, and the desalted water is used to rinse the component 7 to be decontaminated.

[0052] Embodiment five: This embodiment discloses a method for using a mechanically assisted chemical decontamination device, see Figure 2 , as follows: Place the part to be decontaminated 7 in the drum grinder 5, and add φ10 corundum abrasive to the drum grinder 5. Turn on the power of the drum grinder 5, adjust the vibration frequency of the drum grinder 5, so that the abrasive 6 can vibrate relatively on the part to be decontaminated 7, then add the chemical decontaminant to the decontamination solution tank through the decontamination liquid adding pipe 10, add the decontamination water to the required liquid level through the decontamination water adding pipe 9, start the electric heating, and heat the solution to the required temperature. Start the decontamination circulation pump 2 to spray the decontamination liquid in the decontamination solution tank 1 to the surface of the sample to be decontaminated through the spray head 4 for decontamination. After reaching the required decontamination standard, discharge the waste liquid through the decontamination waste liquid discharge pipe 12 at the bottom, then add a certain amount of decontamination water to the decontamination solution tank 1 through the decontamination water adding pipe 9, and rinse the part to be decontaminated 7 with water.

[0053] Preferably, the vibration frequency of the drum grinder can be adjusted manually as needed; Preferably, the detergent is sprayed into the drum grinder through a spray head; Preferably, the vibration frequency of the drum is adjusted so that the part to be decontaminated and the abrasive material grind against each other, and the removal of dirt on the surface of the part to be decontaminated is accelerated under the synergistic effect of the chemical decontamination of the decontamination liquid; Preferably, the decontamination solution after passing through the component to be decontaminated flows through the outflow pipe to the decontamination solution tank; Preferably, the decontamination liquid in the decontamination solution tank is sent to the spray head again through the decontamination circulation pump for circulation decontamination; Preferably, during the decontamination process, the concentration and formula of the decontamination liquid can be changed depending on the decontamination effect; after the decontamination is completed, the decontamination waste liquid is discharged into the waste liquid collection device through the waste liquid discharge pipe at the bottom.

[0054] The present invention combines the characteristics of chemical and physical decontamination, combining the dissolution of corrosion products by chemical solvents and the grinding of metal surface pollutants by abrasives. Through the grinding of the abrasives and the surface of metal parts, the oxide film on the metal surface can be removed more quickly under physical grinding and dissolution by chemical solutions, and the friction of the abrasives can make the solvent penetrate deeper into the oxide film, thereby accelerating the removal of oxide film contaminants.

[0055] The above contents are only for explaining the technical idea of ​​the present invention and cannot be used to limit the protection scope of the present invention. Any changes made on the basis of the technical solution in accordance with the technical idea proposed by the present invention shall fall within the protection scope of the claims of the present invention.

Claims

1. A mechanically assisted chemical decontamination device, characterized in that: The invention comprises a drum grinder (5), wherein abrasive (6) is built in a drum of the drum grinder (5), a spray head (4) is arranged on the top of the drum of the drum grinder (5), a liquid discharge port is opened on the drum of the drum grinder (5), the liquid discharge port is connected to a decontamination solution tank (1), the decontamination solution tank (1) is connected to the spray head (4) via a conveying pipe (3), and a decontamination circulation pump (2) is arranged on the conveying pipe (3).

2. A mechanically assisted chemical decontamination device according to claim 1, characterized in that: The liquid discharge port is located at the bottom of the drum grinder (5), and a filter screen (13) is provided on the liquid discharge port.

3. A mechanically assisted chemical decontamination device according to claim 2, characterized in that: The diameter of the filter holes of the filter screen (13) is smaller than the diameter of the abrasive (6).

4. A mechanically assisted chemical decontamination device according to claim 2, characterized in that: The liquid discharge port is connected to the decontamination solution tank (1) via an outflow pipe (8), and a valve is provided on the outflow pipe (8).

5. The mechanically assisted chemical decontamination device according to claim 1, characterized in that: The decontamination solution tank (1) is provided with a desalted water addition pipe (9), a decontamination liquid addition pipe (10) and a decontamination waste liquid discharge component.

6. A mechanically assisted chemical decontamination device according to claim 5, characterized in that: An electric heating component (11) and a temperature control component are provided in the decontamination solution tank (1), and the temperature control component is electrically connected to the electric heating component (11).

7. The mechanically assisted chemical decontamination device according to claim 5, characterized in that: The decontamination waste liquid discharge component comprises a decontamination waste liquid discharge pipe (12), a valve is provided on the decontamination waste liquid discharge pipe (12), and the decontamination waste liquid discharge pipe (12) is connected to the decontamination solution tank (1).

8. A mechanically assisted chemical decontamination device according to claim 7, characterized in that: The connection point between the decontamination waste liquid discharge pipe (12) and the decontamination solution tank (1) is located at the bottom of the decontamination solution tank (1).

9. A mechanically assisted chemical decontamination device according to claim 1 or 5, characterized in that: The decontamination solution tank (1) is provided with a stirring component.

10. A method for using a mechanically assisted chemical decontamination device according to any one of claims 1 to 9, characterized in that: The following steps are involved: Adding the abrasive (6) and the part to be decontaminated (7) into the drum of the drum grinder (5), starting the drum grinder (5), causing relative vibration between the abrasive (6) and the part to be decontaminated (7), thereby rubbing and decontaminating the part to be decontaminated (7) with the abrasive (6); A certain amount of decontamination liquid is added to a decontamination solution tank (1), and the decontamination liquid in the decontamination solution tank (1) is transported to a spray head (4) through a transport pipe (3) by a decontamination circulation pump (2). The decontamination liquid is sprayed into a drum of a drum grinder (5) through the spray head (4), and the decontamination liquid is used to chemically decontaminate the component to be decontaminated (7), and the dirt is discharged into the decontamination solution tank (1) along with the decontamination liquid through a discharge port; After the decontamination is completed, the decontamination liquid in the decontamination solution tank (1) is discharged, a certain amount of desalted water is added, and the decontamination water is transported to the spray head (4) by the decontamination circulation pump (2). The desalted water is sprayed into the drum of the drum grinder (5) through the spray head (4), and the desalted water is used to rinse the parts to be decontaminated (7).

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