An activated carbon management system for nuclear power plants

Abstract

The present invention discloses an activated carbon management system for a nuclear power plant, which is used for loading or unloading activated carbon in an iodine filter. The system includes a first storage device, a second storage device and a first box body. The first storage device, the second storage device and the first box body are all independently arranged and movable. The first box body includes a control unit, a compressor and a conveying unit. The control unit controls the working modes of the compressor and the conveying unit according to a preset rule, so that the system is in a loading mode or an unloading mode. When the system is in the loading mode, the system has a loading route, and the conveying unit loads the activated carbon in the first storage device into the iodine filter. When the system is in the unloading mode, the system has an unloading route, and the activated carbon in the iodine filter is unloaded into the second storage device. Each part of the system provided by the present invention is independently arranged and movable, and is convenient to use. It can not only empty the activated carbon filled in the iodine filter, but also realize the filling of new activated carbon in the empty iodine filter.

Description

Technical Field

[0001] The present invention relates to the field of nuclear power plant decontamination, and particularly to an activated carbon management system for a nuclear power plant. Background Art

[0002] Currently, during the operation and maintenance of a nuclear power plant system, the used activated carbon in an iodine filter needs to be discharged into a specified container, and at the same time, the empty iodine filter needs to be filled with activated carbon. Also, due to the particularity of a nuclear power plant, it should be ensured that the content of radioactive iodide in the solid-gas mixture discharged during the loading and unloading process meets the emission standards, and it is also necessary to ensure that the staff does not directly contact the activated carbon containing radioactive iodide. In addition, the replacement platform in the prior art is large and heavy, and each component cannot be used flexibly and cannot be moved at will. Moreover, due to the centralized setting of each component, it is difficult to replace a certain component and the maintenance time is prolonged.

[0003] Therefore, an activated carbon management system for a nuclear power plant is needed. Summary of the Invention

[0004] In view of the above, it is necessary to provide an activated carbon management system for a nuclear power plant, and the technical solution is as follows:

[0005] The present invention provides an activated carbon management system for a nuclear power plant, which is used for loading or unloading the activated carbon in an iodine filter. The system includes a first storage device for storing unused activated carbon, a second storage device for storing used activated carbon, and a first box body. Among them, the first storage device, the second storage device, and the first box body are all independently arranged and movable. The first box body includes a control unit, a compressor, and a conveying unit. The compressor is connected to the conveying unit, and the control unit is electrically connected to the compressor and the conveying unit respectively. The control unit controls the working modes of the compressor and the conveying unit according to preset rules, so that the system is in a loading mode or an unloading mode;

[0006] When the system is in the loading mode, the system has a loading route, and the conveying unit loads the activated carbon in the first storage device into the iodine filter;

[0007] When the system is in the unloading mode, the system has an unloading route, and the activated carbon in the iodine filter is unloaded into the second storage device.

[0008] Further, the first box body further includes a separator; the conveying unit includes a rotary valve and a second conveying pipe fitting. The inlet of the rotary valve is communicated with the first outlet of the separator, and the rotary valve is connected to the positive pressure side of the compressor; the system further includes a suction gun and a first conveying pipe fitting adapted to both the suction gun and the separator;

[0009] When the system is in the loading mode, one end of the first conveying pipe fitting communicates with the first inlet of the separator, the other end communicates with the suction gun, one end of the second conveying pipe fitting communicates with the outlet of the rotary valve, and the other end communicates with the inlet of the iodine filter. The control unit controls the operation of the compressor and the rotary valve. The suction gun sucks the solid-gas mixture from the first storage device and sends the solid-gas mixture to the separator through the first conveying pipe fitting for separation. The separated activated carbon is loaded into the iodine filter through the rotary valve and the second conveying pipe fitting in sequence, forming a loading route.

[0010] Further, the loading route further includes a first filtration circuit; the system further includes a first filtration device, which is independently arranged and movable, and the first filtration device is connected to the control unit;

[0011] When the system is in the loading mode, the second outlet of the separator communicates with the inlet of the first filtration device, and the outlet of the first filtration device is connected to the negative pressure side of the compressor. Under the action of the compressor, the first filtration device can filter the air separated by the separator.

[0012] Preferably, the first filtration device includes a pressure reducer, a filter element and a dust storage mechanism. The pressure reducer is used to reduce the compressed air pressure value generated by the compressor to a preset pressure value, and the dust storage mechanism is used to store the dust generated after being filtered by the filter element.

[0013] Further, the loading route further includes a second filtration circuit; the system further includes a second filtration device, which is independently arranged and movable, and the second filtration device is connected to the control unit;

[0014] When the system is in the loading mode, the dust removal port of the iodine filter communicates with the inlet of the second filtration device. Under the action of the compressor, the activated carbon in the first storage device is loaded into the iodine filter. At the same time, the second filtration device filters the solid-gas mixture discharged from the dust removal port of the iodine filter.

[0015] Preferably, the second filtration device includes a first pre-filtration module, an ash removal module, a first high-efficiency filtration module and a first iodine adsorption module connected in sequence. Among them, the inlet of the second filtration device communicates with the inlet of the first pre-filtration module, and the outlet of the first iodine adsorption module communicates with the outlet of the second filtration device;

[0016] When the system is in the loading mode, under the action of the second filtration device, the carbon slag, dust and iodine aerosol in the solid-gas mixture discharged from the dust removal port of the iodine filter are filtered.

[0017] Further preferably, the second filtering device further includes a first controller, a first detection device and a first alarm device. Among them, the first detection device is arranged at the outlet of the second filtering device for detecting the iodine aerosol content;

[0018] The first detection device and the first alarm device are respectively electrically connected to the first controller. A first comparator circuit is provided in the first controller. The first input end of the first comparator circuit is electrically connected to the first detection device. A iodine aerosol content threshold is preset at the second input end of the first comparator circuit. The output end of the first comparator circuit is electrically connected to the first alarm device. When the iodine aerosol content detection value sent by the first detection device is higher than the iodine aerosol content threshold, the first controller controls the first alarm device to give an alarm through the first comparator circuit.

[0019] Further, a first interface and a second interface are provided on the second storage device;

[0020] When the system is in the unloading mode, the discharge port of the iodine filter is communicated with the first interface of the second storage device through a third conveying pipe fitting. The second interface of the second storage device is communicated with the separator through the first conveying pipe fitting. The control unit controls the compressor to work and controls the rotary valve to stop working, and opens the exhaust port of the iodine filter. Under the action of the compressor, the waste mixture in the iodine filter is unloaded into the second storage device through the third conveying pipe fitting to form an unloading route;

[0021] A second controller, a second detection device and an alarm device are further provided in the second storage device. Among them, the second detection device is arranged in the second storage device for detecting the height value of the waste mixture in the second storage device;

[0022] The second detection device and the second alarm device are respectively electrically connected to the second controller. A second comparator circuit is provided in the second controller. The second input end of the second comparator circuit is electrically connected to the second detection device. A waste mixture height threshold is preset at the second input end of the second comparator circuit. The output end of the second comparator circuit is electrically connected to the second alarm device. When the waste mixture height detection value sent by the second detection device is higher than the waste mixture height threshold, the second controller controls the second alarm device to give an alarm through the second comparator circuit.

[0023] Further, the unloading route further includes a third filtering loop; The system further includes a third filtering device, which is independently arranged and movable, and the third filtering device is connected to the control unit;

[0024] When the system is in the unloading mode, under the action of the compressor, the third filtering device filters the waste mixture entering the separator, so that carbon slag, dust and iodine aerosol in the waste mixture are filtered;

[0025] The third filtering device includes a second pre-filtering module, a second high-efficiency filtering module and a second iodine adsorption module connected in sequence. Among them, the inlet of the third filtering device is communicated with the inlet of the second pre-filtering module, and the outlet of the second iodine adsorption module is communicated with the outlet of the third filtering device;

[0026] When the system is in the unloading mode, under the action of the third filtering device, carbon slag, dust and iodine aerosol in the solid-gas mixture discharged from the dust removal port of the iodine filter are filtered.

[0027] Further, the preset rules include:

[0028] Within a preset first time, the control unit controls the working modes of the compressor and the conveying unit, so that the system is in the loading mode; within a preset second time, the control unit controls the working modes of the compressor and the conveying unit, so that the system is in the unloading mode.

[0029] Preferably, the first storage device, the second storage device, the first box body, the first filtering device, the second filtering device and the third filtering device are all provided with casters.

[0030] The present invention has the following advantages: Each part of the system is independently arranged and movable, and is convenient to use. It can not only empty the activated carbon filled in the iodine filter, but also realize the filling of new activated carbon in the empty iodine filter. Description of the Drawings

[0031] Figure 1 It is the first system schematic diagram of the activated carbon management system provided by the embodiment of the present invention;

[0032] Figure 2 It is the second system schematic diagram of the activated carbon management system provided by the embodiment of the present invention;

[0033] Figure 3 It is the partial schematic diagram of the second filtering device provided by the embodiment of the present invention;

[0034] Figure 4 It is the partial schematic diagram of the third filtering device provided by the embodiment of the present invention. Detailed Embodiments

[0035] To enable those skilled in the art to better understand the solution of the present invention, and to more clearly understand the purpose, technical solution and its advantages of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with specific embodiments and with reference to the accompanying drawings. It should be noted that the implementation manners not illustrated or described in the drawings are the forms known to those of ordinary skill in the art. In addition, although this text may provide examples of parameters including specific values, it should be understood that the parameters do not necessarily exactly equal the corresponding values, but may approximate the corresponding values within an acceptable error tolerance or design constraint. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention. In addition, the terms "comprising" and "having" in the description and claims of the present invention and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, apparatus, product or device comprising a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0036] The concept of the present invention is to set the components for loading and unloading activated carbon as independent and movable, and at the same time, filter circuits are respectively arranged on the loading route and unloading route of the activated carbon for filtering. This not only meets the need for flexible loading and unloading of activated carbon, is more convenient and fast, but also ensures that the staff will not come into contact with radioactive substances during the process of replacing the activated carbon, which is safe and reliable.

[0037] In one embodiment of the present invention, an activated carbon management system for a nuclear power plant is provided, as Figure 1 、 2 shown. The system includes a first storage device, a second storage device, a first box body, a first filtering device, a second filtering device and a third filtering device. Among them, the first storage device is used to hold unused activated carbon, and the second storage device is used to hold used activated carbon. It should be noted that the first storage device, the second storage device, the first box body, the first filtering device, the second filtering device and the third filtering device are all independently arranged and movable. In this embodiment, casters are provided on the first storage device, the second storage device, the first box body, the first filtering device, the second filtering device and the third filtering device. The casters are only for example and do not limit the protection scope of the present invention.

[0038] The first box body includes a control unit, a compressor, and a separator conveying unit. Among them, the compressor is connected to the conveying unit, and the control unit is respectively connected to the compressor, the conveying unit, the first filtering device, the second filtering device, and the third filtering device. The control unit controls the working modes of the compressor and the conveying unit according to preset rules, so that the system is in a loading mode or an unloading mode. It should be noted that in this embodiment, the control unit is electrically connected to the compressor and the conveying unit, such as wires, and the control unit is respectively connected to the first filtering device, the second filtering device, and the third filtering device through wireless communication, such as a communication module. However, the selection of the specific connection method is determined according to the actual situation. Wires and communication modules are only examples and do not limit the protection scope of the present invention. In addition, the preset rules include that within a preset first time, the control unit controls the working modes of the compressor and the conveying unit so that the system is in a loading mode; within a preset second time, the control unit controls the working modes of the compressor and the conveying unit so that the system is in an unloading mode. Specifically, for example, if the nuclear power system plans to operate starting from May 10th, then five days before that, the activated carbon is loaded into the iodine filter through the management system, and one month later, the activated carbon in the iodine filter is unloaded through the management system. Among them, five days is the preset first time, and one month is the preset second time. Five days and one month are only examples and do not limit the protection scope of the present invention.

[0039] In this embodiment, the system further includes a suction gun and a first conveying pipe fitting adapted to both the separator and the suction gun. The conveying unit includes a rotary valve and a second conveying pipe fitting. The inlet of the rotary valve is communicated with the first outlet of the separator, and the rotary valve is connected to the positive pressure side of the compressor.

[0040] The management system is used to load the activated carbon in the iodine filter. The system has a loading route. Specifically, the suction gun is communicated with one end of the first conveying pipe fitting, the other end of the first conveying pipe fitting is communicated with the first inlet of the separator, the first outlet of the separator is communicated with the inlet of the rotary valve, and the rotary valve is connected to the positive pressure side of the compressor. One end of the second conveying pipe fitting is communicated with the outlet of the rotary valve, and the other end of the second conveying pipe fitting is communicated with the inlet of the iodine filter.

[0041] When the system is in the loading mode, the control unit controls the compressor and the rotary valve to work. The suction gun sucks the solid-gas mixture from the first storage device and sends the solid-gas mixture to the separator through the first conveying pipe fitting for separation. The separated activated carbon is successively loaded into the iodine filter through the rotary valve and the second conveying pipe fitting.

[0042] The charging route further includes a first filtration circuit and a second filtration circuit.

[0043] The first filtration circuit mainly filters the air separated by the separator. Specifically, when the system is in the charging mode, the second outlet of the separator is communicated with the inlet of the first filtration device, and the outlet of the first filtration device is connected to the negative pressure side of the compressor. The control unit controls the compressor and the rotary valve to work. The suction gun sucks the solid-gas mixture from the first storage device. The activated carbon in the solid-gas mixture is separated by the separator, and the remaining dust and other impurities enter the first filtration device through the second outlet of the separator. Under the action of the first filtration device, the impurities are filtered.

[0044] In this embodiment, the first filtration device includes a pressure reducer, a filter element, and a dust storage mechanism. The pressure reducer is used to reduce the compressed air pressure value generated by the compressor to a preset pressure value, and the dust storage mechanism is used to store dust and other impurities generated after being filtered by the filter element.

[0045] The second filtration circuit mainly filters the solid-gas mixture discharged from the dust removal port of the iodine filter. Specifically, when the system is in the charging mode, the dust removal port of the iodine filter is communicated with the inlet of the second filtration device. The control unit controls the compressor and the rotary valve to work. The activated carbon in the first storage device is loaded into the iodine filter. At the same time, the solid-gas mixture discharged from the dust removal port of the iodine filter is filtered by the second filtration device, so that dust and other impurities in the solid-gas mixture are filtered.

[0046] In this embodiment, as Figure 3 shown, the second filtration device includes a first pre-filtration module, an ash removal module, a first high-efficiency filtration module, and a first iodine adsorption module connected in sequence. The inlet of the second filtration device is communicated with the inlet of the first pre-filtration module, and the outlet of the first iodine adsorption module is communicated with the outlet of the second filtration device. When the system is in the charging mode, under the action of the second filtration device, impurities including but not limited to carbon slag, dust, and iodine aerosol in the solid-gas mixture discharged from the dust removal port of the iodine filter are filtered.

[0047] In addition, the second filtration device in this embodiment further includes a first controller, a first detection device, and a first alarm device. Among them, the first detection device is disposed at the outlet of the second filtration device for detecting the iodine aerosol content. The first detection device and the first alarm device are respectively electrically connected to the first controller. A first comparator circuit is provided in the first controller. A first input terminal of the first comparator circuit is electrically connected to the first detection device. A threshold value of the iodine aerosol content is preset at a second input terminal of the first comparator circuit. An output terminal of the first comparator circuit is electrically connected to the first alarm device. Specifically, when the detected value of the iodine aerosol content sent by the first detection device is higher than the threshold value of the iodine aerosol content, that is, the emission standard is not met, the first controller controls the first alarm device to give an alarm through the first comparator circuit to alert the staff to handle it. For example, filter again until the emission standard is met. The method can be manual handling, or the outlet of the second filtration device can be connected to the inlet of the second filtration device through a pipe fitting, and the purpose of re-filtration can be achieved through the joint control of the control unit and the first controller. The above methods are only examples and do not limit the protection scope of the present invention.

[0048] The management system is further configured to unload the activated carbon in the iodine filter. The system has an unloading route. Specifically, in this embodiment, a first interface and a second interface are provided on the second storage device. A discharge port of the iodine filter is connected to the first interface of the second storage device through a third conveying pipe fitting. The second interface of the second storage device is connected to the separator through the first conveying pipe fitting. The separator is respectively connected to the third filtration device and the compressor.

[0049] When the system is in the unloading mode, the control unit controls the compressor to operate and controls the rotary valve to stop operating, and opens the exhaust port of the iodine filter. Under the action of the compressor, the waste mixture in the iodine filter is unloaded into the second storage device through the third conveying pipe fitting. The waste mixture includes, but is not limited to, the used activated carbon.

[0050] The unloading route further includes a third filtration circuit, which mainly filters the waste mixture entering the separator, such as carbon ash, dust, iodine aerosol, etc. Specifically, when the system is in the unloading mode, the control unit controls the compressor to operate, and the waste mixture enters the third filtration device through the separator for filtration, so that impurities including, but not limited to, carbon ash, dust, iodine aerosol, etc. in the waste mixture are filtered.

[0051] In this embodiment, as Figure 4As shown, the third filtering device includes a second pre-filtering module, a second high-efficiency filtering module, and a second iodine adsorption module connected in sequence. Among them, the inlet of the third filtering device is communicated with the inlet of the second pre-filtering module, and the outlet of the second iodine adsorption module is communicated with the outlet of the third filtering device. When the system is in the unloading mode, under the action of the third filtering device, impurities in the waste mixture, including but not limited to carbon slag, dust, and iodine aerosol, are filtered out.

[0052] In addition, a second controller, a second detection device, and an alarm device are further provided in the second storage device of this embodiment. Among them, the second detection device is arranged in the second storage device and is used to detect the height value of the waste mixture in the second storage device. The second detection device and the second alarm device are respectively electrically connected to the second controller. A second comparator circuit is provided in the second controller. The second input end of the second comparator circuit is electrically connected to the second detection device. A waste mixture height threshold is preset at the second input end of the second comparator circuit. The output end of the second comparator circuit is electrically connected to the second alarm device. When the waste mixture height detection value sent by the second detection device is higher than the waste mixture height threshold, the second controller controls the second alarm device to give an alarm through the second comparator circuit, so as to realize warning the staff to replace the new storage device when the detected height value is higher than or exceeds the expectation, in order to prevent the overflow of radioactive waste and be safer and more intelligent.

[0053] The activated carbon management system provided by the present invention can not only empty the activated carbon filled in the iodine filter, remove the activated carbon debris and dust in the orifice gaps inside the iodine filter, but also realize the filling of new activated carbon in the empty iodine filter, and will not damage the integrity of the activated carbon particles during the filling process. At the same time, it ensures that the content of radioactive iodide in the solid-gas mixture discharged during the loading and unloading process meets the emission standards, and ensures that the staff will not directly contact the activated carbon containing radioactive iodide, which is safe and reliable.

[0054] The above are only the preferred embodiments of the present invention, and do not limit its patent scope accordingly. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present invention, directly or indirectly applied to other related technical fields, shall be equally included in the patent protection scope of the present invention.

Claims

1. An activated carbon management system for a nuclear power plant, characterized in that, For loading or unloading activated carbon in an iodine filter, the system includes a first storage device for storing unused activated carbon, a second storage device for storing used activated carbon, and a first box body. Among them, the first storage device, the second storage device, and the first box body are all independently arranged and movable. The first box body includes a control unit, a compressor, and a conveying unit. The compressor is connected to the conveying unit, and the control unit is electrically connected to the compressor and the conveying unit respectively. The control unit controls the working modes of the compressor and the conveying unit according to preset rules, so that the system is in a loading mode or an unloading mode; The first box body further includes a separator, and the separator includes a first outlet and a second outlet; the conveying unit includes a rotary valve, the inlet of the rotary valve is communicated with the first outlet of the separator, and the rotary valve is connected to the positive pressure side of the compressor; the system further includes a first filtering device, the first filtering device is connected to the control unit, the second outlet of the separator is communicated with the inlet of the first filtering device, and the outlet of the first filtering device is connected to the negative pressure side of the compressor; When the system is in the loading mode, the system has a loading route. The solid-gas mixture in the first storage device passes through the separator, and the separator separates the activated carbon in the solid-gas mixture. The conveying unit loads the activated carbon in the first storage device from the first outlet of the separator into the iodine filter, and loads other solid-gas mixtures except activated carbon into the first filtering device through the second outlet of the separator; When the system is in the unloading mode, the system has an unloading route, and the activated carbon in the iodine filter is unloaded into the second storage device.

2. The activated carbon management system for a nuclear power plant according to claim 1, characterized in that, The conveying unit includes a second conveying pipe fitting; the system further includes a suction gun and a first conveying pipe fitting adapted to both the suction gun and the separator; When the system is in the loading mode, one end of the first conveying pipe fitting is communicated with the first inlet of the separator, and the other end is communicated with the suction gun. One end of the second conveying pipe fitting is communicated with the outlet of the rotary valve, and the other end is communicated with the inlet of the iodine filter. The control unit controls the compressor and the rotary valve to work. The suction gun sucks the solid-gas mixture from the first storage device and sends the solid-gas mixture to the separator through the first conveying pipe fitting for separation. The separated activated carbon is loaded into the iodine filter through the rotary valve and the second conveying pipe fitting in sequence, forming a loading route.

3. The activated carbon management system for a nuclear power plant according to claim 2, wherein The loading route further includes a first filtering loop; the first filtering device is independently arranged and movable; When the system is in the loading mode, under the action of the compressor, the first filtering device can filter the air separated by the separator.

4. The activated carbon management system for a nuclear power plant according to claim 3, characterized in that, The first filtering device includes a pressure reducer, a filter element, and a dust storage mechanism. The pressure reducer is used to reduce the compressed air pressure value generated by the compressor to a preset pressure value, and the dust storage mechanism is used to store the dust generated after being filtered by the filter element.

5. The activated carbon management system for a nuclear power plant according to claim 2, wherein, The filling route further includes a second filtration circuit; the system further includes a second filtration device, which is independently arranged and movable, and the second filtration device is connected to the control unit; When the system is in the filling mode, the dust removal port of the iodine filter is communicated with the inlet of the second filtration device. Under the action of the compressor, the activated carbon in the first storage device is loaded into the iodine filter. At the same time, the second filtration device filters the solid-gas mixture discharged from the dust removal port of the iodine filter.

6. The activated carbon management system for a nuclear power plant according to claim 5, wherein, The second filtration device includes a first pre-filtration module, an ash removal module, a first high-efficiency filtration module and a first iodine adsorption module connected in sequence. Among them, the inlet of the second filtration device is communicated with the inlet of the first pre-filtration module, and the outlet of the first iodine adsorption module is communicated with the outlet of the second filtration device; When the system is in the filling mode, under the action of the second filtration device, carbon slag, dust and iodine aerosol in the solid-gas mixture discharged from the dust removal port of the iodine filter are filtered.

7. The activated carbon management system for a nuclear power plant according to claim 6, characterized in that, The second filtration device further includes a first controller, a first detection device and a first alarm device. Among them, the first detection device is arranged at the outlet of the second filtration device for detecting the iodine aerosol content; The first detection device and the first alarm device are respectively electrically connected to the first controller. A first comparator circuit is arranged in the first controller. The first input end of the first comparator circuit is electrically connected to the first detection device. A threshold value of iodine aerosol content is preset at the second input end of the first comparator circuit. The output end of the first comparator circuit is electrically connected to the first alarm device. When the iodine aerosol content detection value sent by the first detection device is higher than the iodine aerosol content threshold value, the first controller controls the first alarm device to give an alarm through the first comparator circuit.

8. The activated carbon management system for a nuclear power plant according to claim 2, characterized in that, The second storage device is provided with a first interface and a second interface; When the system is in the unloading mode, the discharge port of the iodine filter is communicated with the first interface of the second storage device through a third conveying pipe fitting. The second interface of the second storage device is communicated with the separator through the first conveying pipe fitting; the control unit controls the compressor to work and controls the rotary valve to stop working, and opens the exhaust port of the iodine filter. Under the action of the compressor, the waste mixture in the iodine filter is unloaded into the second storage device through the third conveying pipe fitting to form an unloading route; The second storage device further includes a second controller, a second detection device and an alarm device. Among them, the second detection device is arranged in the second storage device for detecting the height value of the waste mixture in the second storage device; The second detection device and the second alarm device are respectively electrically connected to the second controller. A second comparator circuit is provided in the second controller. The second input terminal of the second comparator circuit is electrically connected to the second detection device. A waste mixture height threshold is preset at the second input terminal of the second comparator circuit. The output terminal of the second comparator circuit is electrically connected to the second alarm device. When the waste mixture height detection value sent by the second detection device is higher than the waste mixture height threshold, the second controller controls the second alarm device to give an alarm through the second comparator circuit.

9. The activated carbon management system for a nuclear power plant according to claim 8, wherein, The unloading route further includes a third filtration circuit; the system further includes a third filtration device, which is independently arranged and movable, and the third filtration device is connected to the control unit; When the system is in the unloading mode, under the action of the compressor, the third filtration device filters the waste mixture entering the separator, so that the carbon slag, dust and iodine aerosol in the waste mixture are filtered; The third filtration device includes a second pre-filtration module, a second high-efficiency filtration module and a second iodine adsorption module connected in sequence. Among them, the inlet of the third filtration device is communicated with the inlet of the second pre-filtration module, and the outlet of the second iodine adsorption module is communicated with the outlet of the third filtration device.

10. The activated carbon management system for a nuclear power plant according to claim 1, wherein The preset rules include: Within a preset first time, the control unit controls the working modes of the compressor and the conveying unit so that the system is in the loading mode; within a preset second time, the control unit controls the working modes of the compressor and the conveying unit so that the system is in the unloading mode.

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