Device for removing radioactive dust on surface
By combining an oxidative gel spraying device and a recovery module, the secondary pollution and radiation risks of radioactive dust on the equipment surface are solved, achieving efficient and safe dust removal.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- CHINA INST FOR RADIATION PROTECTION
- Filing Date
- 2025-12-30
- Publication Date
- 2026-04-28
AI Technical Summary
Existing technologies for removing radioactive dust from equipment surfaces suffer from problems such as secondary pollution, difficulty in collection, and high radiation risks for workers.
An oxidative gel spraying device is used to spray oxidative gel through a robotic arm module and dry and cure it within a preset time to form cracks. The oxidative gel after cracking is collected by a recycling module, and the spraying and recycling process is precisely controlled by a control module.
It reduces the radiation risk to workers, avoids secondary pollution, improves the convenience and safety of operation, and simplifies the equipment structure.
Smart Images
Figure CN121938680A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of radioactive contaminant treatment technology, and in particular to an apparatus for removing surface radioactive dust. Background Technology
[0002] In the field of nuclear equipment technology, it is common for equipment surfaces to be contaminated with radioactive pollutants. To remove radioactive contaminants such as graphite dust from these surfaces, existing techniques typically involve high-pressure water jet washing or chemical etching. However, both methods have drawbacks, including the generation of secondary pollutants, difficulty in collection and treatment, and low decontamination efficiency. Furthermore, these methods pose a risk of radiation damage to workers operating in contaminated areas.
[0003] How to solve the above-mentioned technical problems has become an urgent technical challenge for the industry. Summary of the Invention
[0004] In order to overcome the shortcomings of the prior art, the purpose of this invention is to provide a device for removing surface radioactive dust, thereby avoiding the problem of secondary pollution caused by existing methods of handling radioactive dust.
[0005] To achieve the above objectives, this application provides an apparatus for removing surface radioactive dust, comprising: The mobile chassis module is equipped with a robotic arm module and an oxidative gel spraying module. The robotic arm module is equipped with a robotic arm; The oxidative gel spraying module includes a storage tank, a compressed air cylinder, a spraying pipeline, and nozzles; The storage tank contains oxidized gel, and the compressed gas in the compressed air cylinder is connected to the storage tank. The compressed air cylinder is used to supply compressed gas to the storage tank; The spraying pipeline connects the material storage tank and the nozzle; The spraying lines and nozzles are mounted on the robotic arm; The oxidized gel dries, hardens, and cracks within a preset time. The mobile chassis module also includes: The recycling module is used to collect the oxidized gel after cracking.
[0006] Preferably, the recycling module includes a dust collection unit and an adsorption pipeline; When the dust collection unit is working, it collects the cracked oxidized gel through the adsorption pipeline.
[0007] Preferably, the recycling module further includes: A brush with air intake holes around its perimeter; The adsorption pipeline connects the air intake and the dust collection unit.
[0008] Preferably, the adsorption tubing and brush are fixed to the robotic arm.
[0009] Preferably, the robotic arm is a multi-axis robotic arm.
[0010] Preferably, it also includes: The control module is used to control the movement and steering of the mobile chassis module; The control module is also used to control the spraying time of the oxidative gel spraying module; The control module is also connected to the robotic arm module to control the working radius and working angle of the robotic arm.
[0011] Preferably, the mobile chassis module is provided with a platform, and the oxidative gel spraying module and the recycling module are simultaneously or alternately arranged on the platform.
[0012] Preferably, the platform is provided with a limiting part for fixing the oxidized gel spraying module and the recycling module.
[0013] Preferably, both the oxidative gel spraying module and the recovery module are equipped with monitoring units, and the control module adjusts the movement and steering of the mobile chassis module according to the information obtained by the monitoring units; The control module also adjusts the working radius and working angle of the robotic arm based on the information obtained from the monitoring unit.
[0014] Preferably, the components of the oxidative gel include, by mass parts: 30-40 parts water, 15-30 parts nitric acid, 20-25 parts cerium ammonium nitrate, 5-10 parts silica, and 2-5 parts gel cracking agent.
[0015] The above technical solution reduces the risk of radiation exposure to workers; avoids the problems of secondary pollution and difficulty in collection caused by existing methods of handling radioactive dust; prevents the escape of pollutants, further protecting the safety of workers; and features simple equipment, improving ease of operation.
[0016] Other features and advantages of this application will be set forth in the following description, and will be apparent in part from the description, or may be learned by practicing this application. Attached Figure Description
[0017] The accompanying drawings are provided to further illustrate the present application and form part of the specification. Together with the embodiments of the present application, they serve to explain the present application but do not constitute a limitation thereof. In the drawings: Figure 1 This is a three-dimensional structural diagram of an apparatus for removing surface radioactive dust according to an embodiment of this application; Figure 2This is a three-dimensional structural schematic diagram of an apparatus for removing surface radioactive dust according to another embodiment of this application.
[0018] Figure label: 10-Mobile chassis module; 20-Platform; 30-Robotic arm module; 40-Oxidation gel spraying module; 50-Robotic arm; 60-Monitoring unit. Detailed Implementation
[0019] The preferred embodiments of this application are described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit this application.
[0020] Embodiments of this application will now be described in more detail with reference to the accompanying drawings. While some embodiments of this application are shown in the drawings, it should be understood that this application can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of this application. It should be understood that the drawings and embodiments of this application are for illustrative purposes only and are not intended to limit the scope of protection of this application.
[0021] The term "comprising" and its variations as used herein are open-ended inclusions, meaning "including but not limited to". The term "based on" means "at least partially based on". The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments". Definitions of other terms will be given in the description below.
[0022] It should be noted that the terms "first" and "second" may be used in this application only to distinguish different devices, components or parts, and are not used to define the order of functions performed by these devices, components or parts or their interdependence.
[0023] It should be noted that the terms "one" and "more" used in this application are illustrative rather than restrictive, and those skilled in the art should understand that, unless explicitly stated otherwise in the context, they should be understood as "one or more". "More" should be understood as two or more.
[0024] The apparatus for removing surface radioactive dust according to this application includes: Mobile chassis module 10, on which robotic arm module 30 and oxidative gel spraying module 40 are provided; The robotic arm module 30 is equipped with a robotic arm 50; The oxidative gel spraying module 40 includes a storage tank, a compressed air cylinder, a spraying pipeline, and a nozzle; The storage tank contains oxidized gel, and the compressed gas in the compressed air cylinder is connected to the storage tank. The compressed air cylinder is used to supply compressed gas to the storage tank; The spraying pipeline connects the material storage tank and the nozzle; The spraying lines and nozzles are mounted on the robotic arm 50; The oxidized gel dries, hardens, and cracks within a preset time. The mobile chassis module 10 also includes: The recycling module is used to collect the oxidized gel after cracking.
[0025] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.
[0026] Example 1 Figure 1 This is a three-dimensional structural diagram of an apparatus for removing surface radioactive dust according to an embodiment of this application. Figure 2 This is a three-dimensional structural schematic diagram of an apparatus for removing surface radioactive dust according to another embodiment of this application, as shown below. Figures 1 to 2 As shown in the figure, the apparatus for removing surface radioactive dust according to an embodiment of this application includes: a mobile chassis module 10.
[0027] In one exemplary embodiment, the mobile chassis module 10 may be, for example, an unmanned vehicle or a remote-controlled vehicle; as needed, the mobile chassis module 10 may include: a power unit, a frame, and multiple steering wheels.
[0028] In one exemplary embodiment, the power unit is, for example, a battery.
[0029] In one exemplary embodiment, the mobile chassis module 10 is further provided with a platform 20, which can be understood as a placement platform.
[0030] In one exemplary embodiment, the mobile chassis module 10 is provided with a robotic arm module 30 and an oxidizing gel spraying module 40. The robotic arm module 30 and the oxidizing gel spraying module 40 are, for example, disposed on the platform 20. As needed, the robotic arm module 30 and the oxidizing gel spraying module 40 can be disposed at the front end and rear end of the mobile chassis module 10, respectively.
[0031] In one exemplary embodiment, the robotic arm module 30 is provided with a robotic arm 50, which is, for example, a multi-axis robotic arm. In order to achieve multi-angle bending and rotation, a five-axis robotic arm is selected.
[0032] In one exemplary embodiment, the robotic arm module 30 may, as needed, further include a robotic arm drive unit and a connecting component for the robotic arm drive unit to drive the robotic arm 50.
[0033] In one exemplary embodiment, the oxidative gel spraying module 40 includes a storage tank, a compressed air cylinder, a spraying pipeline, and a nozzle.
[0034] In one exemplary embodiment, the storage tank contains oxidized gel, or is used to store oxidized gel.
[0035] In one exemplary embodiment, the compressed gas in the compressed air cylinder is connected to the storage tank. This can be understood as the oxidative condensation can spray radioactive dust on the surface of an object. The pressure comes from the compressed air cylinder injecting compressed gas into the storage tank, or it can be understood as the compressed air cylinder providing compressed gas to the storage tank.
[0036] In one exemplary embodiment, the spray line connects a storage tank and a nozzle.
[0037] In one exemplary embodiment, the spraying lines and nozzles are disposed on the robotic arm 50, for example, multiple line holding positions are sequentially disposed on the robotic arm 50, the spraying lines are sequentially disposed on these line holding positions, and the nozzles protrude from the front end of the robotic arm 50.
[0038] In one exemplary embodiment, the oxidative gel dries, solidifies, and cracks within a preset time. That is, after the oxidative gel is sprayed onto the surface of an object for a period of time, the oxidative gel will dry, solidify, and eventually crack and peel off.
[0039] In one exemplary embodiment, the mobile chassis module 10 is further provided with a recycling module.
[0040] In one exemplary embodiment, the recycling module is used to collect the oxidized gel after cracking.
[0041] In one exemplary embodiment, the recycling module and the oxidative gel spraying module 40 may be alternately arranged on the mobile chassis module 10, or they may be arranged simultaneously on the mobile chassis module 10, as needed.
[0042] In one exemplary embodiment, the recycling module includes a dust collection unit and an adsorption pipeline.
[0043] In one exemplary embodiment, the dust collection unit collects the cracked oxidized gel through an adsorption pipeline during operation.
[0044] In one exemplary embodiment, the recycling module further includes a brush; it can be understood that the portion of the oxidized gel that has dried, cured, and cracked but still has not fallen off can be brushed off with the brush.
[0045] In one exemplary embodiment, the brush is surrounded by suction holes, and the adsorption pipeline connects the suction holes and the dust collection unit; this design allows the brush to remove the undried oxidized gel while simultaneously sucking it away through the suction holes, thus improving the working efficiency during adsorption.
[0046] In one exemplary embodiment, the adsorption line and brush are fixed to the robotic arm 50, for example, in a line holder position similar to that of the spray line and nozzle.
[0047] In one exemplary embodiment, when the oxidative gel spraying module 40 and the recycling module are simultaneously mounted on the mobile chassis module 10 as needed, for example, the nozzle is positioned below the robotic arm 50 while the brush is positioned above the robotic arm 50.
[0048] In one exemplary embodiment, the apparatus for removing surface radioactive dust according to this application further includes a control module.
[0049] In one exemplary embodiment, the control module is used to control the movement and steering of the mobile chassis module 10, that is, the forward, backward and steering movements of the mobile chassis module 10 are executed according to the instructions of the control module.
[0050] In one exemplary embodiment, the control module is also used to control the spraying time of the oxidative gel spraying module 40.
[0051] In one exemplary embodiment, the control module is also connected to the robotic arm module 30 to control the working radius and working angle of the robotic arm 50. Taking the spraying of oxidizing gel as an example, due to the different equipment, the various components have different structures, making it difficult to achieve a uniform plane. In this case, it is necessary to adjust the spraying angle and working radius for different spraying processes. The adjustment of the robotic arm 50 to these different states is also an execution of the instructions from the control module.
[0052] In one exemplary embodiment, both the oxidative gel spraying module 40 and the recovery module are equipped with a monitoring unit 60.
[0053] In one exemplary embodiment, the control module adjusts the movement and steering of the mobile chassis module 10 based on information obtained by the monitoring unit 60.
[0054] In one exemplary embodiment, the control module also adjusts the working radius and working angle of the robotic arm 50 based on the information obtained by the monitoring unit 60.
[0055] In one exemplary embodiment, the instructions of the control module may be to perform the tasks of spraying oxidizing gel and adsorbing the oxidizing aggregates after cracking, based on the shape of the object where the radioactive dust to be eliminated is located, or the tasks of spraying oxidizing gel and adsorbing the oxidizing aggregates after cracking may be performed remotely by the operator.
[0056] In one exemplary embodiment, the monitoring unit 60 is, for example, a monitoring probe.
[0057] In one exemplary embodiment, as needed, in order to fix the oxidizing gel spraying module 40 and the recycling module disposed on the stage 20, a limiting part is provided on the stage 20 for fixing the oxidizing gel spraying module 40 and the recycling module.
[0058] In one exemplary embodiment, the limiting portion on the stage 20 is, for example, a snap-fit, which matches the bottom of the oxidizing gel spraying module 40 and the recycling module.
[0059] In one exemplary embodiment, the components of the oxidative gel in this application embodiment include, by mass parts: 30-40 parts water, 15-30 parts nitric acid, 20-25 parts cerium ammonium nitrate, 5-10 parts silica, and 2-5 parts gel cracking agent.
[0060] Example 2 This application embodiment is an oxidative gel used for collecting radiation dust from the surface of objects described in the above embodiments. The oxidative gel will dry and solidify within a preset time, and then crack.
[0061] The oxidative gel components of this application embodiment include, by mass parts: 30-40 parts water, 15-30 parts nitric acid, 20-25 parts cerium ammonium nitrate, 5-10 parts silica, and 2-5 parts gel cracking agent.
[0062] In one exemplary embodiment, as needed, the oxidative gel components of this application embodiment include, by mass parts: 40 parts water, 30 parts nitric acid, 20 parts cerium ammonium nitrate, 8 parts silica, and 2 parts gel cracking agent. The oxidative gel is then sprayed onto the surface of a 304 stainless steel plate, the gel drying time is recorded, and the average corrosion depth of the steel plate is calculated by weighing. The conclusion is as follows: the gel drying time is 3.2 hours, and the average corrosion depth is 1.145 micrometers.
[0063] In one exemplary embodiment, as needed, the oxidative gel components of this application embodiment include, by mass parts: 40 parts water, 20 parts nitric acid, 25 parts cerium ammonium nitrate, 10 parts silica, and 5 parts gel cracking agent. The oxidative gel is then sprayed onto the surface of a 304 stainless steel plate, the gel drying time is recorded, and the average corrosion depth of the steel plate is calculated using a weighing method. The conclusions are as follows: the gel drying time is 3.3 hours, and the average corrosion depth is 1.034 micrometers.
[0064] In one exemplary embodiment, as needed, the oxidative gel components of this application embodiment include, by mass parts: 35 parts water, 27 parts nitric acid, 23 parts cerium ammonium nitrate, 10 parts silica, and 5 parts gel cracking agent. The oxidative gel is then sprayed onto the surface of a 304 stainless steel plate, the gel drying time is recorded, and the average corrosion depth of the steel plate is calculated using a weighing method. The conclusion is as follows: the gel drying time is 2.7 hours, and the average corrosion depth is 1.104 micrometers.
[0065] In one exemplary embodiment, as needed, the oxidative gel components of this application embodiment include, by mass parts: 30 parts water, 30 parts nitric acid, 25 parts cerium ammonium nitrate, 10 parts silica, and 5 parts gel cracking agent. The oxidative gel is then sprayed onto the surface of a 304 stainless steel plate, the gel drying time is recorded, and the average corrosion depth of the steel plate is calculated using a weighing method. The conclusions are as follows: the gel drying time is 1.8 hours, and the average corrosion depth is 1.325 micrometers.
[0066] In one exemplary embodiment, as needed, the oxidative gel components of this application embodiment include, by mass parts: 40 parts water, 30 parts nitric acid, 21 parts cerium ammonium nitrate, 5 parts silica, and 4 parts gel cracking agent. The oxidative gel is then sprayed onto the surface of a 304 stainless steel plate, the gel drying time is recorded, and the average corrosion depth of the steel plate is calculated by weighing. The conclusion is as follows: the gel drying time is 3.2 hours, and the average corrosion depth is 1.152 micrometers.
[0067] It will be understood by those skilled in the art that the above are merely preferred embodiments of this application and are not intended to limit this application. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.
Claims
1. An apparatus for removing surface radioactive dust, characterized in that, include: A mobile chassis module, wherein a robotic arm module and an oxidative gel spraying module are provided on the mobile chassis module; The robotic arm module is equipped with a robotic arm; The oxidative gel spraying module includes a storage tank, a compressed air cylinder, a spraying pipeline, and a nozzle. The storage tank contains oxidized gel, and the compressed gas in the compressed air cylinder is connected to the storage tank. The compressed air cylinder is used to supply compressed gas to the storage tank; The spraying pipeline connects the storage tank and the nozzle; The spraying pipeline and the nozzle are mounted on the robotic arm; The oxidized gel dries, solidifies, and cracks within a preset time. The mobile chassis module is also equipped with: A recycling module for collecting the oxidized gel after cracking.
2. The apparatus for removing surface radioactive dust according to claim 1, characterized in that, The recycling module includes a dust collection unit and an adsorption pipeline; When the dust collection unit is working, it collects the cracked oxidized gel through the adsorption pipeline.
3. The apparatus for removing surface radioactive dust according to claim 2, characterized in that, The recycling module also includes: A brush, wherein air intake holes are provided around the brush; The adsorption pipeline connects the air intake and the dust collection unit.
4. The apparatus for removing surface radioactive dust according to claim 3, characterized in that, The adsorption pipeline and the brush are fixed to the robotic arm.
5. The apparatus for removing surface radioactive dust according to claim 1, characterized in that, The robotic arm is a multi-axis robotic arm.
6. The apparatus for removing surface radioactive dust according to claim 1, characterized in that, It also includes: A control module, which controls the movement and steering of the mobile chassis module; The control module is also used to control the spraying time of the oxidative gel spraying module; The control module is also connected to the robotic arm module to control the working radius and working angle of the robotic arm.
7. The apparatus for removing surface radioactive dust according to claim 1, characterized in that, The mobile chassis module is equipped with a platform, and the oxidative gel spraying module and the recycling module are simultaneously or alternately arranged on the platform.
8. The apparatus for removing surface radioactive dust according to claim 7, characterized in that, The platform is provided with a limiting part for fixing the oxidized gel spraying module and the recycling module.
9. The apparatus for removing surface radioactive dust according to claim 6, characterized in that, Both the oxidative gel spraying module and the recycling module are equipped with monitoring units, and the control module adjusts the movement and steering of the mobile chassis module according to the information obtained by the monitoring units. The control module also adjusts the working radius and working angle of the robotic arm based on the information obtained by the monitoring unit.
10. The apparatus for removing surface radioactive dust according to claim 1, characterized in that, The components of the oxidative gel, by mass fraction, include: 30-40 parts water, 15-30 parts nitric acid, 20-25 parts cerium ammonium nitrate, 5-10 parts silica, and 2-5 parts gel cracking agent.