Uranium hexafluoride pouring system used between containers

Abstract

The invention relates to the technical field of uranium hexafluoride pouring, in particular to a uranium hexafluoride pouring system used between containers. The uranium hexafluoride material pouring system comprises a material supply container used for containing a solid uranium hexafluoride material; the heating device is used for heating the feeding container, so that the solid uranium hexafluoride material in the feeding container is sublimated into a gaseous state; the conveying pipeline is used for communicating the feeding container with the receiving container; the material receiving container is used for containing the uranium hexafluoride material conveyed into the material receiving container through the conveying pipeline; and the condensing device is used for condensing the gaseous uranium hexafluoride material in the material receiving container into a solid state. According to the uranium hexafluoride pouring system, the solid uranium hexafluoride materials can be safely and efficiently transferred to the material receiving container from the material supply container.

Description

Technical Field

[0001] The present application relates to the technical field of uranium hexafluoride detection, and in particular to a uranium hexafluoride pouring system for containers. Background Art

[0002] Uranium hexafluoride (UF6) is a key compound in the production process of nuclear fuel cycle facilities, and its handling and safe management are of vital importance. At room temperature and pressure, UF6 is in the form of a white solid powder, but it can sublime into gas at 56.4°C. Due to its active chemical properties, strong oxidizing, toxic and easy to spread, the leakage of UF6 may cause serious harm to operators and the environment.

[0003] In order to study the properties of UF6 leakage, experimenters often conduct simulated leakage experiments of UF6. During the experiment, solid UF6 needs to be poured between different containers.

[0004] However, the prior art UF6 dumping system is not safe and efficient enough. Summary of the invention

[0005] In order to solve the deficiencies in the prior art, the purpose of the present application is to provide a uranium hexafluoride unloading system between containers, which can safely and efficiently unload and transfer UF6.

[0006] To achieve the above-mentioned purpose, the present application provides a uranium hexafluoride unloading system for containers, comprising:

[0007] A feed container, which is used to contain solid uranium hexafluoride material;

[0008] A heating device, which is used to heat the feed container to sublime the solid uranium hexafluoride material in the feed container into a gaseous state;

[0009] A transmission pipeline, used to connect the material supply container and the material receiving container;

[0010] A material receiving container, the material receiving container is used to contain the uranium hexafluoride material transmitted to the material receiving container via the transmission pipeline;

[0011] A condensing device is used to condense the gaseous uranium hexafluoride material in the receiving container into a solid state.

[0012] Furthermore, the transmission pipeline is provided with electric heating, and the electric heating is used to maintain the uranium hexafluoride material in the transmission pipeline in a gaseous state.

[0013] Furthermore, the material supply container is provided with a first manual valve, the material receiving container is provided with a second manual valve, and both ends of the transmission pipeline are connected to the first manual valve and the second manual valve respectively.

[0014] Furthermore, it also includes a purge pipeline, which is connected to both ends of the transmission pipeline through solenoid valves.

[0015] Furthermore, the material supply container is provided with a third manual valve, and the material receiving container is provided with a fourth manual valve, and the third manual valve and the fourth manual valve are respectively connected to the purge pipeline through a solenoid valve.

[0016] Furthermore, the material supply container and the material receiving container are respectively arranged on an electronic scale.

[0017] Furthermore, the heating device is an electric heating device arranged around the supply container.

[0018] Furthermore, the condensing device is a refrigerant condensing device whose coolant is ethylene glycol.

[0019] Furthermore, the transmission pipeline is also provided with a flow meter, a thermometer and a pressure gauge.

[0020] Furthermore, the transmission pipeline includes a first pipeline, both ends of the first pipeline are connected to solenoid valves, the first pipeline is connected to a second pipeline and a third pipeline, the second pipeline is connected to the first manual valve, and the third pipeline is connected to the second manual valve.

[0021] The uranium hexafluoride material discharging system provided in the present application can safely and efficiently transfer solid uranium hexafluoride material from a supply container to a receiving container.

[0022] Other features and advantages of the present application will be set forth in the following description, and in part will become apparent from the description, or may be understood by practicing the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings are used to provide a further understanding of the present application and constitute a part of the specification. Together with the embodiments of the present application, they are used to explain the present application and do not constitute a limitation of the present application. In the accompanying drawings:

[0024] Figure 1 This is a schematic diagram of the structure of the uranium hexafluoride material discharge system of the present application. DETAILED DESCRIPTION

[0025] The embodiments of the present application will be described in more detail below with reference to the accompanying drawings. Although certain embodiments of the present application are shown in the accompanying drawings, it should be understood that the present application can be implemented in various forms and should not be construed as being limited to the embodiments described herein. Instead, these embodiments are provided to provide a more thorough and complete understanding of the present application. It should be understood that the drawings and embodiments of the present application are only for exemplary purposes and are not intended to limit the scope of protection of the present application.

[0026] It should be understood that the various steps described in the method implementation of the present application can be performed in different orders and / or performed in parallel. In addition, the method implementation may include additional steps and / or omit the steps shown. The scope of the present application is not limited in this respect.

[0027] The term "including" and its variations used herein are open inclusions, i.e., "including but not limited to". The term "based on" means "based at least in part 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". The relevant definitions of other terms will be given in the following description.

[0028] It should be noted that the modifications of "one" and "plurality" mentioned in this application are illustrative rather than restrictive, and those skilled in the art should understand that unless otherwise clearly indicated in the context, it should be understood as "one or more". "Plurality" should be understood as two or more.

[0029] Hereinafter, embodiments of the present application will be described in detail with reference to the accompanying drawings.

[0030] Example 1

[0031] One embodiment of the present application provides a uranium hexafluoride dumping system for use between containers. Figure 1 This is a schematic diagram of the structure of the uranium hexafluoride feeding system of the present application, which will be referred to below Figure 1 The uranium hexafluoride discharging system of the present application is described in detail, including:

[0032] A feed container 10, the feed container 10 is used to contain solid uranium hexafluoride material;

[0033] A heating device 20, which is used to heat the feed container 10 to sublime the solid uranium hexafluoride material in the feed container 10 into a gaseous state;

[0034] A transmission pipeline, used to connect the material supply container 10 and the material receiving container 40;

[0035] A material receiving container 40, which is used to contain the uranium hexafluoride material transmitted to the material receiving container 40 via the transmission pipeline;

[0036] The condensation device 50 is used to condense the gaseous uranium hexafluoride material in the material receiving container 40 into a solid state.

[0037] In this embodiment, a first manual valve 101 is provided on the material supply container 10, a second manual valve 401 is provided on the material receiving container 40, and both ends of the transmission pipeline are connected to the first manual valve 101 and the second manual valve 401 respectively.

[0038] In this embodiment, the transmission pipeline is equipped with electric heating, which is used to maintain the uranium hexafluoride material in the transmission pipeline in a gaseous state. The temperature of the electric heating is generally 70°C-100°C.

[0039] It is understandable that electric tracing is an effective solution for pipe insulation and antifreeze, and has been widely used. It is generally implemented using electric tracing tape. When the electric tracing tape is connected to the power supply, the current passes from one core through the conductive PTC material to another core to form a loop. The electric energy heats up the conductive material, and its resistance increases immediately. When the core temperature rises to a certain value, the resistance is so large that it almost blocks the current, and its temperature no longer rises. At the same time, the electric tracing tape transfers heat to the heated system with a lower temperature.

[0040] In this embodiment, a purge pipeline 70 is further included, and the purge pipeline 70 is connected to both ends of the transmission pipeline through the solenoid valve 200 respectively.

[0041] In this embodiment, a third manual valve 102 is provided on the material supply container 10 , and a fourth manual valve 402 is provided on the material receiving container 40 . The third manual valve 102 and the fourth manual valve 402 are connected to the purge pipeline 70 through the solenoid valve 200 , respectively.

[0042] The purge pipeline 70 is used to connect the purge pipeline 70 and the transmission pipeline before the material is officially poured, and use compressed air to purge it to check whether the transmission pipeline is unobstructed and whether the opening and closing of each valve are normal, so as to ensure safety and stability during the material pouring.

[0043] In this embodiment, the material supply container 10 and the material receiving container 40 are respectively disposed on an electronic scale 60 .

[0044] In this embodiment, the heating device 20 is an electric heating device arranged around the supply container 10, and the heating temperature is not less than 64°C.

[0045] In some other embodiments, the heating device 20 may also be an electric heating device disposed below the supply container 10 .

[0046] In this embodiment, the condensing device 50 is a refrigerant condensing device in which the coolant is ethylene glycol.

[0047] In this embodiment, the refrigerant condensing device is generally composed of a refrigeration and heating unit, a cold and hot medium storage tank, and a PLC control system, which can be controlled by the host computer in the central control room, wherein the refrigeration and heating unit includes a closed heating and refrigeration circulator, a cold and hot medium storage tank diverter valve group, and an independent control system. The cold and hot media adopt a closed heating and refrigeration cycle, no oil mist is generated at high temperature, no water vapor is absorbed at low temperature, and it is completely isolated from the air; wherein, the cold and hot medium storage tanks adopt high-quality corrosion-resistant stainless steel liner; wherein, the PLC control system adopts a touch screen display and touch key input, and a temperature curve display, which can control, record, and display the temperature and flow of the coolant in the condenser jacket.

[0048] In other embodiments, a refrigerant condensing device of any structure may also be used.

[0049] In this embodiment, a flow meter 201, a thermometer 202 and a pressure gauge 203 are also provided on the transmission pipeline.

[0050] In this embodiment, the transmission pipeline includes a first pipeline 301, and the solenoid valves 200 are connected to both ends of the first pipeline 301. The second pipeline 302 and the third pipeline 303 are connected to the first pipeline 301. The second pipeline 302 is connected to the first manual valve 101, and the third pipeline 303 is connected to the second manual valve 401.

[0051] Exemplarily, a working process of an embodiment of the present application is as follows:

[0052] Connect the purge pipeline and the transmission pipeline, use compressed air to purge, check whether the transmission pipeline is unobstructed, and check whether the opening and closing of each valve are normal. If it is normal, disconnect the purge pipeline; start the electric heating of the transmission pipeline, and the temperature of the transmission pipeline is not lower than 70℃; start the condensing device to make the temperature of the receiving container less than 50℃; start the heating device, start heating, and record the weight value of the electronic scale under the supply container and the temperature value of the thermometer over time; when the pressure gauge reaches 50Kpa, open the solenoid valve on the transmission pipeline and start pouring. During the pouring process, record the weight value of the electronic scale of the supply container and the receiving container, the temperature value of the thermometer, the pressure value of the pressure gauge, and the flow value of the flow meter; after pouring, turn off the heating device, electric heating, and condensing device in turn; connect the purge pipeline, use compressed air to purge, and purge the transmission pipeline.

[0053] It should be noted that before pouring the materials, the material receiving container is in a vacuum state with negative air pressure.

[0054] It should be noted that electric heating heats up relatively slowly and can be started half an hour in advance.

[0055] The above description is only a partial embodiment of the present application and an explanation of the technical principles used. Those skilled in the art should understand that the scope of disclosure involved in the present application is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the above disclosed concept. For example, the above features are replaced with the technical features with similar functions disclosed in this application (but not limited to) by each other to form a technical solution.

[0056] In addition, although each operation is described in a specific order, this should not be construed as requiring these operations to be performed in the specific order shown or in a sequential order. Under certain circumstances, multitasking and parallel processing may be advantageous. Similarly, although some specific implementation details are included in the above discussion, these should not be construed as limiting the scope of the application. Some features described in the context of a separate embodiment can also be implemented in a single embodiment in combination. On the contrary, the various features described in the context of a single embodiment can also be implemented in multiple embodiments individually or in any suitable sub-combination mode.

[0057] Although the subject matter has been described in language specific to structural features and / or methodological logical actions, it should be understood that the subject matter defined in the appended claims is not necessarily limited to the specific features or actions described above. On the contrary, the specific features and actions described above are merely example forms of implementing the claims.

Claims

1. A system for discharging uranium hexafluoride between containers, characterized in that: include: A feed container, which is used to contain solid uranium hexafluoride material; A heating device, which is used to heat the feed container to sublime the solid uranium hexafluoride material in the feed container into a gaseous state; A transmission pipeline, used to connect the material supply container and the material receiving container; A material receiving container, the material receiving container is used to contain the uranium hexafluoride material transmitted to the material receiving container via the transmission pipeline; A condensing device is used to condense the gaseous uranium hexafluoride material in the receiving container into a solid state.

2. The uranium hexafluoride unloading system for containers according to claim 1, characterized in that: The transmission pipeline is provided with electric heating, and the electric heating is used to maintain the uranium hexafluoride material in the transmission pipeline in a gaseous state.

3. The uranium hexafluoride unloading system for containers according to claim 1, characterized in that: The material supply container is provided with a first manual valve, the material receiving container is provided with a second manual valve, and both ends of the transmission pipeline are connected to the first manual valve and the second manual valve respectively.

4. The uranium hexafluoride unloading system for containers according to claim 1, characterized in that: Also includes: The purge pipeline is connected to both ends of the transmission pipeline through solenoid valves.

5. The uranium hexafluoride unloading system for use between containers according to claim 4, characterized in that: The material supply container is provided with a third manual valve, and the material receiving container is provided with a fourth manual valve. The third manual valve and the fourth manual valve are respectively connected to the purge pipeline through a solenoid valve.

6. The uranium hexafluoride unloading system for containers according to claim 1, characterized in that: The material supply container and the material receiving container are respectively arranged on an electronic scale.

7. The uranium hexafluoride unloading system for containers according to claim 1, characterized in that: The heating device is an electric heating device arranged around the supply container.

8. The uranium hexafluoride unloading system for containers according to claim 1, characterized in that: The condensing device is a refrigerant condensing device whose cooling liquid is ethylene glycol.

9. The system for discharging uranium hexafluoride between containers according to claim 1, characterized in that: The transmission pipeline is also provided with a flow meter, a thermometer and a pressure gauge.

10. The uranium hexafluoride unloading system for containers according to claim 3, characterized in that: The transmission pipeline includes a first pipeline, both ends of the first pipeline are connected to solenoid valves, the first pipeline is connected to a second pipeline and a third pipeline, the second pipeline is connected to the first manual valve, and the third pipeline is connected to the second manual valve.

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