Uranium concentration plant material collecting cold air box capable of controlling material collecting capacity and using method

Abstract

The invention provides a uranium concentration factory material collecting cold air box capable of controlling material collecting capacity and a using method, the uranium concentration factory material collecting cold air box is used for collecting materials, the materials are in a gaseous state at normal temperature and cannot be directly collected in material collecting containers in a solid state, and the cold air box internally comprises a plurality of material collecting containers used for collecting the materials. And each material receiving container is provided with an independent cold air circulating device for cooling, so that the temperature of each material receiving container is independently adjusted, the material collecting quality can be realized through the temperature condition, the material receiving capability can be controlled, and the material receiving effect is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of uranium enrichment, and in particular to a uranium enrichment plant receiving cold air box capable of controlling receiving capacity and a use method thereof. Background Art

[0002] In the product receiving work of the uranium enrichment plant, a -25℃ air cooling cold wind box is used as a refrigeration equipment to provide a low-temperature environment for the receiving container. It is used in the lean material receiving and feeding purification systems of each supply and withdrawal plant, and has achieved good results. It is one of the key equipment in the supply and withdrawal plant.

[0003] With technological advancements, uranium enrichment plants are gradually using smaller receiving containers for product collection. However, these smaller containers reduce the amount of material collected by a single cold air box, resulting in insufficient collection capacity in the feed and reclaim facility. This necessitates increasing the number of receiving containers within a single cold air box. However, this increase in the number of receiving containers inevitably leads to inconsistent and inaccurate quality control when multiple receiving containers operate together. Therefore, the present invention provides a uranium enrichment plant receiving cold air box with controllable collection capacity, utilizing four receiving containers and independently controlling the collection capacity of each container through a cold air circulation device. Summary of the Invention

[0004] The present invention aims to provide a uranium enrichment plant receiving cold air box with controllable receiving capacity and a method for using the same, thereby increasing the receiving capacity and space utilization of a single cold air box and achieving control of the receiving capacity of a container, thereby improving the technical level of the receiving process in the uranium enrichment plant.

[0005] The technical solution of the present invention is as follows: a uranium enrichment plant receiving cold air box with controllable receiving capacity, comprising a cold air box body, wherein the cold air box body comprises a receiving container and a cold air circulation device.

[0006] The cold air box includes four material receiving containers, namely material receiving container A, material receiving container B, material receiving container C, and material receiving container D. Each material receiving container corresponds to an independent cold air circulation device.

[0007] The cold air circulation device includes a centrifugal fan and a return air outlet. The centrifugal fan is connected to an air duct, the air duct is connected to an adjustable air outlet, an evaporator is arranged in the return air outlet, and the return air outlet is connected to the centrifugal fan through a pipeline, and a guide plate is arranged in the pipeline.

[0008] The material receiving container A, material receiving container B, material receiving container C, and material receiving container D correspond to adjustable air outlet A, adjustable air outlet B, adjustable air outlet C, and adjustable air outlet D respectively; adjustable air outlet A, adjustable air outlet B, adjustable air outlet C, and adjustable air outlet D are respectively connected to centrifugal fans A, centrifugal fans B, centrifugal fans C, and centrifugal fans D through their own air ducts; and the material receiving container A, material receiving container B, material receiving container C, and material receiving container D all correspond to independent return air outlets, each independent return air outlet has an evaporator, and the return air outlet is connected to the centrifugal fan through a pipeline, and there is a guide plate in the pipeline.

[0009] The volumes of the material receiving container A, the material receiving container B1, the material receiving container C, and the material receiving container D are all 740L, and are all equipped with electronic scales.

[0010] A cold air box door is installed on the cold air box body.

[0011] It also includes a control cabinet and a refrigeration unit, which are located outside the cold air box; the control cabinet controls the air intake volume of the centrifugal fan and the operation of the refrigeration unit, and the refrigeration unit is connected to the evaporator.

[0012] A method for using a uranium enrichment plant receiving cooling air box capable of controlling receiving capacity comprises the following steps:

[0013] S1: Close the door of the cold air box, connect the control cabinet and the refrigeration unit, start the refrigeration operation, and the temperature inside the cold air box drops from room temperature to -25℃;

[0014] S2: Transfer the materials to various receiving containers through pipelines;

[0015] S3: Set the target receiving value of the receiving container;

[0016] S4: Obtain the current material mass of receiving container A, receiving container B, receiving container C, and receiving container D, and calculate the average material mass of the receiving containers;

[0017] When the mass of the material in any receiving container exceeds the average receiving mass by 5kg, the wind speed of the cold air circulation device corresponding to the receiving container is reduced, so that the temperature of the receiving container rises and the amount of material received decreases;

[0018] When the mass of the material in any receiving container is less than the average receiving mass of 5kg, the wind speed of the cold air circulation device corresponding to the receiving container is increased to reduce the temperature of the receiving container and increase the amount of material received.

[0019] The material is UF6.

[0020] The process further includes S5, when the material receiving mass of each container is equal to the average material receiving mass, maintaining the material receiving process until the material receiving is completed.

[0021] The significant effect of the present invention is that it realizes the control of the material collection rate during the material collection process of multiple material collection containers at the same time, and each container is provided with an independent air duct and an adjustable fan frequency, so that the refrigeration effects of multiple containers in the same cold air box can be independently controlled, thereby effectively controlling the material collection weight of each material collection container and greatly improving the container platform difference control effect.

[0022] On the other hand, it effectively improves the utilization rate of the internal space of the cold air box, avoids the waste of cold air box resources, and reduces the construction and maintenance costs of the uranium enrichment plant. This shows that the new cold air box has significantly improved the material collection effect.

[0023] Because the new cooling box's container receiving weight difference is automatically controlled by the inverter-controlled fan, no manual control is required. This effectively reduces reliance on operator skill, improves the control accuracy of the cooling box's container receiving weight, and reduces the amount of manual operation required during operation. This improves the safety, reliability, and automation level of the air-cooled receiving process, contributing to the intelligent development of the industry. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 Container receiving capacity control logic diagram;

[0025] Figure 2 Schematic diagram of the container receiving cold air box of the present invention;

[0026] Figure 3 Schematic diagram of the material receiving capacity control of the cold air box container according to the present invention;

[0027] In the figure: 1 is the door of the cold air box; 2 is the control cabinet; 3 is the refrigeration unit; 4 is the return air outlet; 5 is the evaporator; 6 is the guide plate; 7 is the centrifugal fan; 8 is the independent air duct; 9 is the adjustable air outlet.

[0028] Material receiving container A11, material receiving container B12, material receiving container C13, material receiving container D14,

[0029] Centrifugal fan A71, centrifugal fan B72, centrifugal fan C73, centrifugal fan D74

[0030] Adjustable air outlet A91, adjustable air outlet B92, adjustable air outlet C93, adjustable air outlet D94;

[0031] Airflow direction 23; DETAILED DESCRIPTION

[0032] The following description sets forth many specific details to facilitate a thorough understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar generalizations without violating the scope of the present application. Therefore, the present application is not limited to the specific implementations disclosed below.

[0033] The terms used in one or more embodiments of the present application are for the purpose of describing specific embodiments only and are not intended to limit one or more embodiments of the present application. The singular forms "a", "the" and "the" used in one or more embodiments of the present application and the appended claims are also intended to include plural forms, unless the context clearly indicates otherwise. It should also be understood that the term "and / or" used in one or more embodiments of the present application refers to and includes any or all possible combinations of one or more associated listed items.

[0034] It should be understood that although the terms "first," "second," and the like may be used to describe various information in one or more embodiments of the present application, such information should not be limited to these terms. These terms are merely used to distinguish information of the same type from one another. For example, "first" may also be referred to as "second," and similarly, "second" may also be referred to as "first," without departing from the scope of one or more embodiments of the present application.

[0035] The present invention provides a uranium enrichment plant receiving cold air box with controllable material collection capacity and a method for use thereof. The cold air box is used to collect material (usually UF6). Such material is in a gaseous state at room temperature and therefore cannot be directly collected in a receiving container in a solid form. The cold air box provided by the present invention includes four receiving containers for collecting the material, and each of the four receiving containers is equipped with an independent cold air circulation device for cooling, thereby independently adjusting the temperature of each receiving container. The material collection quality can be achieved through temperature conditions, thereby achieving controllable material collection capacity; and the material collection capacity of the four receiving containers can be independently controlled.

[0036] The present invention will be further described below with reference to the accompanying drawings;

[0037] A uranium enrichment plant receiving cold air box capable of controlling receiving capacity, comprising a cold air box body, wherein the cold air box body comprises a receiving container and a cold air circulation device;

[0038] In one embodiment, Figure 3 As shown, the cold air box includes four material receiving containers, namely material receiving container A11, material receiving container B12, material receiving container C13, and material receiving container D14, all of which are located in the cold air box and arranged in a row of two, thereby making full use of the space in the cold air box.

[0039] In one embodiment, each material receiving container corresponds to an independent cold air circulation device; the temperature of the material receiving container is controlled by the cold air, thereby controlling the material receiving capacity of the material receiving container.

[0040] like Figure 2As shown, the cold air circulation device includes a centrifugal fan 7, the centrifugal fan 7 is connected to the air duct 8, the air duct 8 is connected to the adjustable air outlet 9, and the cold air is blown into the cold air box through the adjustable air outlet 9, as shown in FIG. Figure 3 As shown in the air flow direction 23, the cold air blown out of the adjustable air outlet 9 will be blown to the corresponding material receiving container, thereby cooling the material receiving container; and the cooled cold air will be heated. The cold air box body also includes a return air outlet 4, an evaporator 5 is arranged in the return air outlet 4, and the return air outlet 4 is connected to the centrifugal fan 7 through a pipeline. In one embodiment, a guide plate 6 is provided in the pipeline.

[0041] The cold air is recovered through the return air port 4 and cooled again after passing through the evaporator 5. The evaporator 5 contains a refrigerant material, which in one embodiment is fluorine. After being cooled by the evaporator 5, the cold air returns to the centrifugal fan 7 through the guide plate 6. The centrifugal fan 7 then re-sends the cold air into the air duct 8 and the adjustable air port 9, thereby forming a cold air circulation.

[0042] In one embodiment, the uranium enrichment plant receiving cold air box with controllable receiving capacity disclosed in the present invention further includes a control cabinet 2 and a refrigeration unit 3, which are located outside the cold air box. The control cabinet 2 controls the air intake of the centrifugal fan 7 and the operation of the refrigeration unit 3, and the refrigeration unit 3 is connected to the evaporator 5 and refrigerated by the refrigerant, thereby cooling the cold air.

[0043] In one embodiment, a cold air box door 1 is installed on the cold air box body;

[0044] like Figure 3 As shown, the material is in the receiving container, there are 4 receiving containers in total, and each receiving container corresponds to an independent cold air circulation device, that is, the receiving container A11, the receiving container B12, the receiving container C13, and the receiving container D14 correspond to the adjustable air outlet A91, the adjustable air outlet B92, the adjustable air outlet C93, and the adjustable air outlet D94 respectively; the adjustable air outlet A91, the adjustable air outlet B92, the adjustable air outlet C93, and the adjustable air outlet D94 are respectively The air duct is connected to centrifugal fan A71, centrifugal fan B72, centrifugal fan C73, and centrifugal fan D74; centrifugal fans A71, centrifugal fans B72, centrifugal fans C73, and centrifugal fans D74 independently control the air output of adjustable air outlet A91, adjustable air outlet B92, adjustable air outlet C93, and adjustable air outlet D94, thereby controlling the material receiving capacity of material receiving container A11, material receiving container B12, material receiving container C13, and material receiving container D14;

[0045] As for the return of cold air, each receiving container (receiving container A11, receiving container B12, receiving container C13, and receiving container D14) corresponds to an independent return air port. Each independent return air port has an evaporator and is connected to a centrifugal fan through a pipe with a guide plate in the pipe.

[0046] Each receiving container is equipped with an electronic scale to determine the mass of the material in the container;

[0047] A method for using a uranium enrichment plant receiving cooling air box capable of controlling receiving capacity comprises the following steps:

[0048] S1: Close the door 1 of the cold air box, connect the control cabinet 2 and the refrigeration unit 3, start the refrigeration operation, the refrigeration unit compresses the refrigerant, the refrigerant evaporates and absorbs heat when passing through the evaporator, the air outside the evaporator is cooled and sent into the cold air box through the air duct, forming an air flow circulation, and the temperature inside the cold air box drops from room temperature to -25℃.

[0049] S2: Transfer the material to each receiving container through the pipeline. The material is specifically UF6, which needs to be kept in solid state at the temperature corresponding to the saturated vapor pressure (-25°C at 240Pa) in order to be collected by the receiving container; otherwise it will be vaporized and cannot be collected in the receiving container. Therefore, the uranium enrichment plant receiving cold air box with controllable receiving capacity of the present invention controls the receiving capacity of the receiving container by controlling the temperature inside the box.

[0050] S3: Set the target material receiving value of the receiving container to 2200 kg; and the target material receiving values ​​of the receiving container A11, receiving container B12, receiving container C13, and receiving container D14 are set independently;

[0051] S4: Obtain the mass of the material in each receiving container through an electronic scale and calculate the average receiving mass of all containers.

[0052] When the material mass in a single receiving container is greater than the average receiving mass by 5kg, the fan frequency corresponding to the container is controlled to be reduced by 10Hz, so that the wind speed received by the container is reduced, thereby reducing the refrigeration capacity of the container, and finally reducing the receiving rate of the container below the average value, so that the receiving mass of the container is the same as the average receiving mass.

[0053] When the material mass in a single receiving container is less than the average receiving mass by 5kg, the fan frequency corresponding to the container is controlled to increase by 10Hz, so that the wind speed received by the container increases, thereby increasing the cooling capacity of the container, and ultimately increasing the receiving rate of the container above the average value, so that the receiving mass of the container is the same as the average receiving mass.

[0054] S5: When the receiving mass of each container is equal to the average receiving mass, control the average of all fans to be the same, so that the average receiving rate of each container is the same, and maintain the receiving process until the receiving is completed.

[0055] The present invention provides a uranium enrichment plant receiving cold air box with controllable receiving capacity and a method for use thereof. The box is used for collecting UF6. Four receiving containers can be installed in one cold air box, fully utilizing the space within the box. Each receiving container is equipped with a separate cold air circulation device. The cold air controls the temperature of the receiving container, thereby controlling the material received by the receiving container. This ensures that the quality of material received by all four receiving containers is precisely controllable and coordinated with each other.

[0056] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

[0057] It should be noted that for the aforementioned method embodiments, for ease of description, they are all expressed as a series of action combinations, but those skilled in the art should be aware that this application is not limited by the order of the actions described, because according to this application, certain steps can be performed in other orders or simultaneously. Secondly, those skilled in the art should also be aware that the embodiments described in this specification are all preferred embodiments, and the actions and modules involved are not necessarily required by this application.

[0058] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0059] The preferred embodiments disclosed above are intended only to help illustrate the present invention. The optional embodiments do not exhaustively describe all details, nor do they limit the invention to the specific embodiments described. Obviously, many modifications and variations are possible based on the content of this application. This application selects and describes these embodiments in detail to better explain the principles and practical applications of this application, thereby enabling those skilled in the art to better understand and utilize this application.

Claims

1. A uranium enrichment plant receiving cooling air box with controllable receiving capacity, characterized by: The utility model comprises a cold air box body, wherein the cold air box body comprises a material receiving container and a cold air circulation device.

2. The uranium enrichment plant receiving cooling air box with controllable receiving capacity according to claim 1, characterized in that: The cold air box includes four material receiving containers, namely material receiving container A (11), material receiving container B (12), material receiving container C (13), and material receiving container D (14), and each material receiving container corresponds to an independent cold air circulation device.

3. The uranium enrichment plant receiving cooling air box with controllable receiving capacity according to claim 2, characterized in that: The cold air circulation device comprises a centrifugal fan (7), a return air port (4), the centrifugal fan (7) is connected to an air duct (8), the air duct (8) is connected to an adjustable air port (9), an evaporator (5) is arranged in the return air port (4), and the return air port (4) is connected to the centrifugal fan (7) through a pipeline, and a guide plate (6) is arranged in the pipeline.

4. The uranium enrichment plant receiving cooling air box with controllable receiving capacity according to claim 2, characterized in that: The material receiving container A (11), the material receiving container B (12), the material receiving container C (13), and the material receiving container D (14) correspond to the adjustable air outlet A (91), the adjustable air outlet B (92), the adjustable air outlet C (93), and the adjustable air outlet D (94), respectively; the adjustable air outlet A (91), the adjustable air outlet B (92), the adjustable air outlet C (93), and the adjustable air outlet D (94) are connected to the centrifugal fan A (71), the centrifugal fan B (72), the centrifugal fan C (73), and the centrifugal fan D (74) through their respective air ducts; and the material receiving container A (11), the material receiving container B (12), the material receiving container C (13), and the material receiving container D (14) all correspond to independent return air outlets, each independent return air outlet has an evaporator, and the return air outlet is connected to the centrifugal fan through a pipeline, and a guide plate is provided in the pipeline.

5. The uranium enrichment plant receiving cooling air box with controllable receiving capacity according to claim 2, characterized in that: The volumes of the material receiving container A (11), the material receiving container B (12), the material receiving container C (13), and the material receiving container D (14) are all 740 L, and are all equipped with electronic scales.

6. The uranium enrichment plant receiving cooling air box with controllable receiving capacity according to claim 1, characterized in that: A cold air box door (1) is installed on the cold air box body.

7. The uranium enrichment plant receiving cooling air box with controllable receiving capacity according to claim 3, characterized in that: The invention also includes a control cabinet (2) and a refrigeration unit (3), wherein the control cabinet (2) and the refrigeration unit (3) are located outside the cold air box; the control cabinet (2) controls the air intake of the centrifugal fan (7) and the operation of the refrigeration unit (3), and the refrigeration unit (3) is connected to the evaporator (5).

8. A method for using a uranium enrichment plant receiving cooling air box capable of controlling receiving capacity, characterized in that: The following steps are involved: S1: Close the door of the cold air box (1), connect the control cabinet (2) and the refrigeration unit (3), start the refrigeration operation, and the temperature inside the cold air box drops from room temperature to -25°C; S2: Transfer the materials to various receiving containers through pipelines; S3: Set the target receiving value of the receiving container; S4: Obtain the current material mass of the receiving container A (11), the receiving container B (12), the receiving container C (13), and the receiving container D (14), and calculate the average material mass of the receiving containers; When the mass of the material in any receiving container exceeds the average receiving mass by 5kg, the wind speed of the cold air circulation device corresponding to the receiving container is reduced, so that the temperature of the receiving container rises and the amount of material received decreases; When the mass of the material in any receiving container is less than the average receiving mass of 5kg, the wind speed of the cold air circulation device corresponding to the receiving container is increased to reduce the temperature of the receiving container and increase the amount of material received.

9. The method for using a uranium enrichment plant receiving cooling air box capable of controlling receiving capacity according to claim 8, characterized in that: The material is UF6.

10. The method for using a uranium enrichment plant receiving cooling air box capable of controlling receiving capacity according to claim 8, characterized in that: The process further includes S5, when the material receiving mass of each container is equal to the average material receiving mass, maintaining the material receiving process until the material receiving is completed.

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