Mobile transition cabin system for nuclear emergency and use method

Abstract

The invention is suitable for the field of nuclear accident emergency, and discloses a movable transition cabin system for nuclear emergency and a using method. Comprising a connecting cabin used for being communicated with an emergency residence area, a reconditioning cabin used for containing nuclear radiation protection articles, an air shower cabin used for blowing loose dust and adsorbed aerosol on the surface of human body protection equipment, a connecting unit used for communicating the emergency residence area, the connecting cabin, the reconditioning cabin and the air shower cabin, and a pair of connecting cabins used for connecting the emergency residence area, the connecting cabin, the reconditioning cabin and the air shower cabin. The air supply unit is used for supplying nuclear purified air to the servicing cabin and the air shower cabin; the protective doors are arranged at the joints of the emergency residence area, the connecting cabin, the servicing cabin and the air shower cabin; wherein the indoor air pressure of the connecting cabin, the servicing cabin and the air shower cabin is sequentially reduced, the indoor air pressure of the air shower cabin is larger than that of the external environment, and a protective door is arranged at the communicating position of the air shower cabin and the external environment.

Description

Technical Field

[0001] The present invention relates to the technical field of nuclear accident emergency, and in particular to a mobile transition cabin system and a usage method for nuclear emergency. Background Art

[0002] In the accident conditions of a nuclear power plant reactor, airborne radioactive pollutants will be formed and spill into the plant environment through various channels. The nuclear power plant has set up emergency places such as the main control room and the emergency center, which are used as the residence places for accident handling personnel in the case of radioactive air pollution accidents. These places are equipped with emergency ventilation systems to filter radioactive air pollutants, provide filtered fresh air and regional pressurization to ensure the intrusion of polluted air into the area, and ensure that the personnel staying in these areas can survive in the event of an accident, so as to meet the requirements for handling actions in the case of radioactive accidents. The entire emergency facility should ensure that the radioactive exposure dose received by the personnel meets the relevant requirements, that is, it needs to have habitability.

[0003] Problems of personnel body surface contamination and carrying and spreading: In the case of a radioactive air pollution accident, when emergency personnel stay or pass outside the emergency habitability area, their bodies are immersed in the contaminated radioactive air, and their body surfaces will be wrapped by radioactive gases, radioactive dust and aerosols, and the soles of their shoes will also be contaminated with radioactive dust or solids. Although accident handling personnel usually take measures such as wearing oxygen cylinders, iodine masks, using plastic gloves, shoe covers, paper clothes, etc. to resist the influence of radioactive polluted air. However, entering the emergency habitability area directly from the outside with such protective measures and not being treated will bring a large amount of radioactive dust and aerosols into the emergency habitability area, resulting in a situation where it gradually spreads from the boundary door of entry and exit to the inside of the habitability area. Even with the movement of the entering personnel everywhere, the radioactive dust and aerosols will be further carried to any place in the emergency habitability area. After multiple accumulations, it is easy to cause radiation safety problems to the personnel in the residence place. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a mobile transition cabin system and a usage method for nuclear emergency.

[0005] The technical solution adopted by the present invention to solve its technical problems is as follows: a connection cabin for communicating with an emergency habitable area, a preparation cabin for placing nuclear radiation protection supplies, a air shower cabin for purging loose dust and adsorbed aerosol on the surface of the personal protection equipment, a connection unit for connecting the emergency habitable area, the connection cabin, the preparation cabin, and the air shower cabin, a air supply unit for supplying air to the connection cabin, the preparation cabin, and the air shower cabin, and a protective door provided at the connection of the emergency habitable area, the connection cabin, the preparation cabin, and the air shower cabin; wherein, the indoor air pressure of the connection cabin is greater than that of the preparation cabin, the indoor air pressure of the preparation cabin is greater than that of the air shower cabin, the indoor air pressure of the air shower cabin is greater than the external environmental air pressure, and a protective door is provided at the connection of the air shower cabin with the external environment.

[0006] In some embodiments, the protective door seals off the emergency habitable area, the connection cabin, the preparation cabin, and the air shower cabin into several independent spaces.

[0007] In some embodiments, the connection unit is provided with a passage for pedestrians to pass through, the passage communicates with the protective door, the connection unit surrounds the protective door, and the connection unit isolates the spaces inside and outside the protective door without interfering with the normal opening of the protective door.

[0008] In some embodiments, the air shower cabin includes a spraying device for purging loose dust and adsorbed aerosol on the surface of the personal protection equipment, a collecting device for dust collection, and an exhaust device for exhausting gas. The spraying device is arranged at the upper part of the air shower cabin and blows air downward. The collecting device is arranged at the bottom of the air shower cabin, and the exhaust device communicates with the collecting device.

[0009] In some embodiments, the air supply unit includes a compressed air supply component, a fan component, a cold and heat separation component, and a filtering component. The fan component is connected to the filtering component to form an external air path. The cold and heat separation component is provided with an inlet, a normal temperature air outlet, a cold air outlet, and a hot air outlet. The compressed air supply component communicates with the inlet. The cold air outlet is connected to the filtering component to form a cold air path. The hot air outlet is connected to the filtering component to form a hot air path. The normal temperature air outlet is connected to the filtering component to form a normal temperature air path. The filtering component communicates with the connection cabin, the preparation cabin, the air shower cabin, and the connection unit.

[0010] In some embodiments, a first exhaust branch pipe, a cold air control valve, and a cold air temperature sensor are provided on the cold air path. The cold air control valve is arranged between the cold air outlet and the filtering component. The first exhaust branch pipe communicates with the external air. The cold air temperature sensor is arranged between the cold air control valve and the filtering component.

[0011] In some embodiments, the cold and heat separation component is composed of a plurality of vortex tubes, and the outer part of the vortex tube is wrapped with heat insulation material.

[0012] The present invention also provides a usage method of a mobile transition cabin system for nuclear emergency use, including the following steps;

[0013] Step S1, continuously introduce air with a pressure higher than the atmospheric pressure into the connection cabin, the preparation cabin, and the air shower cabin. The pressure of the air introduced into the connection cabin is greater than the pressure of the air introduced into the preparation cabin, and the pressure of the air introduced into the preparation cabin is greater than the pressure of the air introduced into the air shower cabin;

[0014] Step S2, when it is detected that a user enters the air shower cabin, close the protective doors at both ends of the air shower cabin, blow the user through the spraying device arranged above the air shower cabin, collect the gas by the collection device and discharge it outside the air shower cabin. When it is detected that the user confirms the signal that the protective door between the air shower cabin and the preparation cabin can be opened, open the protective door close to the preparation cabin;

[0015] Step S3, when it is detected that a user enters the preparation cabin, close the protective door at the connection between the air shower cabin and the preparation cabin. When it is detected that the user confirms the signal that the protective door between the preparation cabin and the connection cabin can be opened, then open the protective door;

[0016] Step S4, when it is detected that a user enters the connection cabin, close the protective door between the preparation cabin and the connection cabin, then open the protective door between the emergency habitable area and the connection cabin. When it is detected that the user enters the emergency habitable area, close the protective door between the emergency habitable area and the connection cabin.

[0017] In some embodiments, the steps for exiting the cabin also include the following:

[0018] Step S11, continuously introduce air with a pressure higher than the atmospheric pressure into the connection cabin, the preparation cabin, and the air shower cabin. The pressure of the air introduced into the connection cabin is greater than the pressure of the air introduced into the preparation cabin, and the pressure of the air introduced into the preparation cabin is greater than the pressure of the air introduced into the air shower cabin;

[0019] Step S12, open the protective door between the emergency habitable area and the connection cabin. When it is detected that the user enters the connection cabin, close the protective door between the emergency habitable area and the connection cabin, and then open the protective door between the preparation cabin and the connection cabin;

[0020] Step S13: When it is detected that the user confirms the signal to open the protective door between the air shower cabin and the maintenance cabin, then open the protective door at the connection between the air shower cabin and the maintenance cabin. When it is detected that the user enters the air shower cabin, then close the protective door at the connection between the air shower cabin and the maintenance cabin, and open the protective door at the connection between the air shower cabin and the external environment to enter the external environment.

[0021] In some embodiments, when there is no one entering or leaving, the maintenance cabin and the air shower cabin continuously introduce air with a pressure higher than the atmospheric pressure, and the air pressure in the maintenance cabin is greater than that in the air shower cabin.

[0022] Implementing the mobile transition cabin system and usage method for nuclear emergency of the present invention has the following beneficial effects: The passage of the transition cabin is divided into three independent cabins by protective doors, so that during the radioactive air pollution period, three barriers are formed outside the protective door in the emergency habitable area. The decontamination and preparation steps before the personnel return from the external polluted environment to the emergency habitable area are integrated in this system. Moreover, since the connection cabin, the maintenance cabin, and the air shower cabin continuously introduce air with a pressure higher than the atmospheric pressure, and the pressure decreases in sequence, and the air flow direction is from the emergency habitable area to the air shower cabin and then to the external environment, it is difficult for the external natural air flow to enter the emergency habitable area, greatly improving the protection effect. In addition, the structure of the three-section transition cabin is simple, easy to carry out, and can be quickly disassembled and assembled to be applicable to sudden nuclear accident situations. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the present invention, the present invention will be further described below in conjunction with the drawings and embodiments. It should be understood that the following drawings only show some embodiments of the present invention, so they should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts. In the drawings:

[0024] Figure 1 is the overall view of a mobile transition cabin system for nuclear emergency in an embodiment of the present invention;

[0025] Figure 2 is the structural diagram of the connection cabin of a mobile transition cabin system for nuclear emergency in an embodiment of the present invention;

[0026] Figure 3 is the structural diagram of the transition cabin of a mobile transition cabin system for nuclear emergency in an embodiment of the present invention;

[0027] Figure 4 is the structural diagram of the air shower cabin of a mobile transition cabin system for nuclear emergency in an embodiment of the present invention;

[0028] Figure 5It is a structural diagram of a nuclear air purification filter for a mobile transition cabin system used in nuclear emergency in an embodiment of the present invention;

[0029] Figure 6 It is a pneumatic circuit diagram of a mobile transition cabin system used in nuclear emergency in an embodiment of the present invention;

[0030] Figure 7 It is a flowchart of the usage method of a mobile transition cabin system used in nuclear emergency in an embodiment of the present invention;

[0031] Figure 8 It is a pneumatic circuit diagram of the air supply for a mobile transition cabin system used in nuclear emergency in an embodiment of the present invention;

[0032] Figure 9 It is an intake and exhaust pipeline diagram of the connection unit of a mobile transition cabin system used in nuclear emergency in an embodiment of the present invention;

[0033] Figure 10 It is a compressed air source component diagram of a mobile transition cabin system used in nuclear emergency in an embodiment of the present invention.

[0034] Reference numerals

[0035] 100, Emergency Residable Area; 110, Protection Door; 120, Connection Unit; 200, Connection Cabin; 210, Barometer; 300, Preparation Cabin; 400, Air Shower Cabin; 410, Spraying Device; 420, Collection Device; 430, Exhaust Device; 500, Air Supply Unit; 510, Compressed Air Supply Assembly; 520, Fan Assembly; 521, Fan Control Valve; 530, Cold and Heat Separation Component; 540, Filter Assembly; 541, Air Inlet; 542, First Air Inlet Valve; 543, Second Air Inlet Valve; 544, Heat Insulation Box; 545, Nuclear Air Purification Filter; 546, First Differential Pressure Gauge; 547, Second Differential Pressure Gauge; 548, Air Outlet; 550, Normal Temperature Air Outlet; 551, Normal Temperature Control Valve; 552, Main Pipe Temperature Sensor; 560, Cold Air Outlet; 561, First Exhaust Branch Pipe; 562, Cold Air Control Valve; 563, Cold Air Temperature Sensor; 564, First Exhaust Control Valve; 570, Hot Air Outlet; 571, Second Exhaust Branch Pipe; 572, Hot Air Control Valve; 573, Hot Air Temperature Sensor; 574, Second Exhaust Control Valve; 610, First Switch Valve; 620, Second Switch Valve; 630, Third Switch Valve; 640, Fourth Switch Valve; 650, Fifth Switch Valve; 660, Sixth Switch Valve; 670, Seventh Switch Valve; 680, Eighth Switch Valve; 690, Ninth Switch Valve; 700, Exhaust Fan; 710, Motor; 720, Tachometer; 730, Bag Filter; 800, Connector; 810, Upstream Pressure Sensor; 820, Downstream Pressure Sensor; 830, Stop Valve; 840, Control Main Valve. Detailed Embodiment

[0036] For a clearer understanding of the technical features, objectives, and effects of the present invention, the detailed embodiment of the present invention will now be described in detail with reference to the accompanying drawings. In the following description, it should be understood that the orientation or positional relationships indicated by "upper", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings, with a specific orientation structure and operation, and are only for the convenience of describing the present technical solution, rather than indicating that the device or element referred to must have a specific orientation. Therefore, it should not be construed as a limitation of the present invention.

[0037] It should also be noted that, unless otherwise clearly specified and defined, terms such as "installation", "connection", "fixation", "setting", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components. When an element is referred to as "on" or "under" another element, the element can be "directly" or "indirectly" located above the other element, or there may also be one or more intermediate elements. The terms "first", "second", "third", etc. are only for the convenience of describing the technical solution of the present invention, and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first", "second", "third", etc. can explicitly or implicitly include one or more of such features. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] Figures 1 to 10 Some preferred embodiments of the present utility model are shown. The mobile transition cabin system and its usage method for nuclear emergency can be used for air pollution protection in the residential area after nuclear contamination.

[0039] Figures 1 to 6 A mobile transition cabin system for nuclear emergency in an embodiment of the present invention is shown. It may include a connection cabin 200 for communicating with the emergency habitable area 100, a preparation cabin 300 for placing nuclear radiation protection supplies, a air shower cabin 400 for purging loose dust and adsorbed aerosol on the surface of the personal protective equipment, a connection unit 120 for connecting the emergency habitable area 100, the connection cabin 200, the preparation cabin 300, and the air shower cabin 400, a air supply unit 500 for supplying air to the connection cabin 200, the preparation cabin 300, and the air shower cabin 400, and a protective door 110 provided at the connection of the emergency habitable area 100, the connection cabin 200, the preparation cabin 300, and the air shower cabin 400; wherein, the indoor air pressure of the connection cabin 200 is greater than the indoor air pressure of the preparation cabin 300, the indoor air pressure of the preparation cabin 300 is greater than the indoor air pressure of the air shower cabin 400, the indoor air pressure of the air shower cabin 400 is greater than the external environmental air pressure, and the protective door 110 is provided at the connection of the air shower cabin 400 and the external environment.

[0040] The passage of the transfer module is divided into three independent compartments by the protective door 110, so that during radioactive air pollution, three barriers are formed outside at the protective door 110 in the emergency habitable area 100. The decontamination and preparation steps before personnel return to the emergency habitable area 100 from the external polluted environment are integrated into this system. Moreover, since the connecting module 200, the preparation module 300, and the air shower module 400 continuously introduce air with a pressure higher than the atmospheric pressure, and the pressure decreases in sequence, the air flow direction is from the emergency habitable area 100 to the air shower module 400 and then to the external environment, making it difficult for external natural air to flow into the emergency habitable area 100, greatly improving the protection effect.

[0041] The transfer module is divided into three independent compartments by three protective doors 110, so that during radioactive air pollution, three barriers are formed outside at the boundary door of the emergency habitable area 100. Through the partition of the three doors and the ventilation control of the three compartments, dynamic and static multiple partition and shielding effects are achieved. The decontamination, preparation, and entry preparation before personnel return from the radioactive polluted air environment to the emergency habitable area 100 are all integrated and completed in a transfer module. It is segmented and combined, and adopts a light weight, easy-to-assemble and foldable method, which can realize the mobility of the transfer module, facilitate transportation and rapid erection.

[0042] In a specific embodiment, one end of the connecting module 200 is connected to the door opening of the protective door 110 or the wall where the door is located through the connecting unit 120, without affecting the outward opening of the boundary door. The other end is connected to the preparation module 300 through the connecting unit 120. The connecting module 200 and the preparation module 300 are separated or passed through by the protective door 110.

[0043] In a specific embodiment, the cross-section of the connecting module 200 is rectangular, or the lower part is rectangular and the top is semi-circular or triangular, etc.

[0044] In a specific embodiment, the cabin body of the connecting module 200 can be formed by assembling different-sized lightweight rods and joints into a framework and then covering it with a film-like sealing material with a certain strength and tensile force, forming a space that is physically isolated from the external polluted atmosphere between the boundary door of the emergency habitable area 100 and the preparation module 300, or a prefabricated sealed film product folding structure like a folding tent. After being quickly opened, it can directly obtain the required space through support and strengthening. Lightweight and simple-structured materials and prefabrication means are used to achieve a layout suitable for movement and the rapid construction of the preparation module 300.

[0045] Furthermore, all electrical and ventilation pipelines are sealed at the penetration points of the connecting module 200, the preparation module 300, the air shower module 400, and the connecting unit 120 to ensure that external air does not enter.

[0046] In a specific embodiment, barometers 210 are provided in the connection cabin 200, the preparation cabin 300, and the air shower cabin 400. The internal air pressure is detected by a differential pressure gauge, so that the air pressures in the connection cabin 200, the preparation cabin 300, and the air shower cabin 400 are always greater than the external atmospheric pressure.

[0047] In a specific embodiment, the cabin body of the preparation cabin 300 is a prefabricated folding structure thin film product of a folding type rubber inflatable skeleton. After inflation, the inflatable skeleton quickly opens and supports, and a connection cabin 200 space structure is quickly formed by pulling the prefabricated thin film type sealing material. Materials with light weight, simple structure, and high strength and prefabrication means are used to realize a preparation cabin 300 suitable for mobile arrangement and can be quickly constructed.

[0048] Furthermore, some radioactive surface contamination measurement devices and small protective articles such as cloth gloves, plastic gloves, and shoe covers are placed in the preparation cabin 300. Large protective articles such as gas cylinders worn when going out are particularly stored, and surface decontamination articles such as decontamination cloths and wiping papers, as well as sealed collection barrels and collection bags for radioactive contaminants, also need to be placed.

[0049] It can be understood that the preparation cabin 300 is considered as a transition area between the radioactive contamination area and the non-radioactive area. Except for disposable protective articles such as small protective articles in this area, other objects are considered to be possibly surface contaminated in terms of management. Only after surface contamination measurement and confirmation of no surface contamination can they be carried into the connection cabin 200.

[0050] Further, Figure 9 It is shown that the air in the preparation cabin 300 is provided by the nuclear-purified air provided by the connection unit 120 through the air inlet circuit, and the air in the area is discharged through the air exhaust circuit. The pressure of the preparation cabin 300 and the atmosphere is monitored by a differential pressure gauge, and the air pressure in the cabin is adjusted by adjusting the air inlet and exhaust air volumes. The air pressure in this area needs to be adjusted to be slightly higher than the atmospheric pressure to reduce the direct leakage of external polluted air into this area, and slightly lower than the air pressure in the connection cabin to ensure that the air in the preparation cabin does not penetrate into the connection cabin.

[0051] Furthermore, the positions where the air supply and exhaust pipelines of the connection cabin and the preparation cabin pass through the connection components are sealed.

[0052] Figure 1 and Figure 2 It is shown that in one embodiment, the protective door 110 may include that the protective door 110 separates the emergency habitable area 100, the connection cabin 200, the preparation cabin 300, and the air shower cabin 400 into several independent spaces.

[0053] Figure 2It is shown that in one embodiment, the connection unit 120 may include that the connection unit 120 is arranged at the protective door 110. An aisle for pedestrians to pass through is provided inside the connection unit 120. The aisle communicates with the protective door 110. The connection unit 120 is arranged around the protective door 110. The connection unit 120 isolates the inner and outer spaces of the protective door 110 and does not interfere with the normal opening of the protective door 110.

[0054] In a specific embodiment, the connection unit 120 is formed by assembling metal rods and joints of different sizes into a frame and then covering it with a thin film sealing material having a certain strength and tensile force, or using a prefabricated folding structure of a prefabricated sealing film product such as a folding tent. After being quickly opened, it is directly formed by the support frame.

[0055] In a specific embodiment, the connection between the connection unit 120 and the door opening or door frame of the protective door 110 is sealed by means of bolts, gaskets, cementing or bonding.

[0056] Figure 4 It is shown that in one embodiment, the air shower cabin 400 may include a spraying device 410 for blowing loose dust and adsorbed aerosols on the surface of the human body protection equipment, a collecting device 420 for dust collection, and an exhaust device 430 for exhausting gas. The spraying device 410 is arranged at the upper part of the air shower cabin 400 and blows air downward. The collecting device 420 is arranged at the bottom of the air shower cabin 400. The exhaust device 430 communicates with the collecting device 420.

[0057] In a specific embodiment, the spraying device 410 is above the air shower cabin 400, and the collecting device 420 and the exhaust device 430 are below. A closed air shower cabin is formed between the air shower cabin passage and the protective door 110. The sprayed air filtered by radioactivity blows out from the upper spraying device 410 to blow loose dust and adsorbed aerosols on the surface of the human body protection equipment, is collected by the lower collecting device 420, and the exhaust gas is directly discharged into the air outside the cabin.

[0058] Furthermore, the cabin body of the air shower cabin 400 can be a space that is formed by assembling metal rods and joints of different sizes into a frame and then covering it with a thin film sealing material having a certain strength and tensile force, and is isolated from the polluted atmosphere entity outside between the protective door 110 of the emergency habitable area 100 and the maintenance cabin 300. It can also be a folding structure of a prefabricated sealing film product such as a folding tent. After being quickly opened, it is directly supported and strengthened to obtain the required space.

[0059] The cabin body of the air shower cabin 400 can also be a prefabricated folding structure film product of a prefabricated folding rubber inflatable skeleton. After being inflated, the inflatable skeleton is quickly opened to support, and a connecting cabin 200 space structure is quickly formed by pulling the prefabricated thin film sealing material.

[0060] Figure 5 and Figure 6 It is shown that in one embodiment, the air supply unit 500 may include a compressed air supply component 510, a fan component 520, a cold and heat separation component 530, and a filter component 540. The fan component 520 is connected to the filter component 540 to form an external air path. The cold and heat separation component 530 is provided with an inlet, a normal temperature air outlet 550, a cold air outlet 560, and a hot air outlet 570. The compressed air supply component 510 communicates with the inlet. The cold air outlet 560 is connected to the filter component 540 to form a cold air path. The hot air outlet 570 is connected to the filter component 540 to form a hot air path. The normal temperature air outlet 550 is connected to the filter component 540 to form a normal temperature air path. The filter component 540 communicates with the connection cabin 200, the maintenance cabin 300, the air shower cabin 400, and the connection unit 120. Only the gas processed by the filter component 540 can be supplied into the transfer cabin system.

[0061] In a specific embodiment, the air source of the compressed air is not a part of this system and is mainly generated and supplied with compressed air of 0.3 - 0.8 MPa by various air compression devices, which is the normal industrial application air pressure.

[0062] In a specific embodiment, Figure 10 It is shown that the air source of the compressed air includes a joint 800, an upstream pressure sensor 810, a downstream pressure sensor 820, a stop valve 830, and a control main valve 840. The joint 800, the stop valve 830, and the control main valve 840 are sequentially connected by pipelines. The upstream pressure sensor 810 is arranged on the pipeline between the joint 800 and the stop valve 830, and the downstream pressure sensor 820 is arranged on the pipeline after the control main valve 840.

[0063] It can be understood that the hot air path can output a relatively hot air flow to increase the temperature inside the cabin, the cold air path can output a relatively cold air flow to decrease the temperature inside the cabin, and the normal temperature air path outputs high-pressure room-temperature gas.

[0064] It can be understood that the external air path uses the air in the external environment and supplies it to the filter component 540 through a fan.

[0065] In a specific embodiment, a normal temperature control valve is further provided at the normal temperature air outlet 550, and the normal temperature control valve is used to control the air output at the normal temperature air outlet.

[0066] In a specific embodiment, the normal temperature air path, the cold air path, and the hot air path converge to form a main pipe, and a main pipe temperature sensor is provided on the main pipe to sense the air temperature inside the main pipe.

[0067] In a specific embodiment, the filtration component 540 includes an air inlet 541, an adiabatic box 544, a nuclear air purification filter 545, a first differential pressure gauge 546, a second differential pressure gauge 547, a first intake valve 542, a second intake valve 543, and an air outlet 548. The filtration component 540 adopts two sets of juxtaposed adiabatic boxes 544 to place two sets of nuclear air purification filters 545. During normal operation, only one set of filters needs to operate, and the other set serves as a backup. The first differential pressure gauge 546 and the second differential pressure gauge 547 are respectively connected inside the adiabatic box 544. When the operating filter becomes blocked, the differential pressure gauge will detect that the pressure difference at both ends of the filter is too large, determine that it is blocked, and immediately switch to the other set of filters for air filtration. The air filtered by the filter is output from the air outlet 548. In the event of an accident emergency, when the differential pressure of the filter is high, the filter may be blown out, completely losing its filtering ability, and radioactive pollutants may cause harm to the personnel in the cabin and increase the risk of radioactive pollutants entering the emergency habitable area 100 through the boundary door. By monitoring the differential pressure of the filter, automatically switching, and giving a differential pressure alarm, the risk of the filter being blown out can be significantly reduced, and an alarm for the need to replace the filter can be issued in a timely manner, so that emergency personnel can replace the filter with a high differential pressure in a timely manner, greatly improving the reliability and continuous operation ability of the system.

[0068] Figure 6 It is shown that in one embodiment, the cold air path may include a first exhaust branch pipe 561, a cold air control valve 562, and a cold air temperature sensor 563 provided on the cold air path. The cold air control valve 562 is arranged between the cold air outlet 560 and the filtration component 540. The first exhaust branch pipe 561 communicates with the external air. The cold air temperature sensor 563 is arranged between the cold air control valve 562 and the filtration component 540. The cold air control valve 562 is used to control the opening and closing of the cold air path, and the temperature sensor is used to detect whether the air temperature of the cold air path reaches the specified temperature. The first exhaust branch pipe 561 is used to discharge the cold air to the external space.

[0069] In a specific embodiment, a first exhaust control valve 564 is further provided on the first exhaust branch pipe 561 to control the exhaust switch of the first exhaust branch pipe 561.

[0070] Figure 6 It is shown that in one embodiment, the hot air path may include a second exhaust branch pipe 571, a hot air control valve 572, and a hot air temperature sensor 573 provided on the hot air path. The hot air control valve 572 is arranged between the hot air outlet 570 and the filtration component 540. The second exhaust branch pipe 571 communicates with the external air. The hot air temperature sensor 573 is arranged between the hot air control valve 572 and the filtration component 540. The hot air control valve 572 is used to control the opening and closing of the hot air path, and the temperature sensor is used to detect whether the air temperature of the hot air path reaches the specified temperature. The second exhaust branch pipe 571 is used to discharge the hot air to the external space.

[0071] In a specific embodiment, a first exhaust control valve 564 is further provided on the second exhaust branch pipe 571 to control the exhaust switch of the second exhaust branch pipe 571.

[0072] In a specific embodiment, when the cold air duct discharges air, the hot and cold separation component 530 will simultaneously output hot air. At this time, the hot air is discharged to the external environment through the second exhaust branch pipe 571. When the hot air duct discharges air, the hot and cold separation component 530 will simultaneously output cold air. At this time, the cold air is discharged to the external environment through the first exhaust branch pipe 561.

[0073] In a specific embodiment, the hot and cold separation component 530 has three working modes as follows:

[0074] First, provide a cold air source:

[0075] The working mode of the hot and cold separator is as follows: The air source of compressed air provides compressed air to the hot and cold separation component 530. Open the cold air control valve 562, the second exhaust control valve 574, and the normal temperature control valve 551; close the first exhaust control valve 564 and the hot air control valve 572. The compressed air enters the vortex tube. The cold air passes through the cold air duct and the cold air control valve 562, and is mixed with the compressed air passing through the bypass of the vortex tube and the normal temperature control valve 551 in front of the filter assembly 540. After passing through the filter assembly 540, a cold air source is provided to each compartment. The corresponding temperature can be obtained through the main pipe temperature sensor 552. The temperature and the supply air volume of the cold air source can be adjusted through the cold air control valve 562 and the normal temperature control valve 551. The hot air generated by the vortex tube cannot be utilized here and can be discharged into the atmosphere through the opening of the second exhaust control valve 574. It should be understood that the air discharged from the second exhaust branch pipe is air with a relatively high temperature to prevent scalding of personnel.

[0076] Second, provide a hot air source:

[0077] The working mode of the hot and cold separation component is as follows: The compressed air connection component provides compressed air to this component. Open the first exhaust control valve 564, the hot air control valve 572, and the normal temperature control valve 551; close the cold air control valve 562 and the second exhaust control valve 574. The compressed air enters the vortex tube. The hot air passes through the hot air duct and the hot air control valve 572, and is mixed with the compressed air passing through the bypass of the vortex tube and the normal temperature control valve 551 in front of the filter assembly 540. After passing through the filter, a hot air source is provided to each compartment. The corresponding temperature can be obtained through the main pipe temperature sensor 552. The temperature and the supply air volume of the hot air source can be adjusted through the first exhaust control valve 564, the hot air control valve 572, and the normal temperature control valve 551. The cold air generated by the vortex tube cannot be utilized here and can be discharged into the atmosphere through the opening of the first exhaust control valve 564. It should be understood that the air discharged from the exhaust port is air with a relatively low temperature to prevent frostbite of personnel.

[0078] The third type: providing a normal-temperature gas source:

[0079] The working mode of the cold and heat separation component is as follows: The compressed air connection component supplies compressed air to this component, and the normal-temperature control valve 551 is opened; the first exhaust control valve 564, the hot air control valve 572 are closed, and the cold air control valve 562 and the second exhaust control valve 574 are closed. The compressed air enters the vortex tube and bypasses to the filter to provide a normal-temperature gas source to each cabin.

[0080] In a specific embodiment, there are three ways of supplying gas in total:

[0081] The first way is the mode where the compressed air supply component 510 operates and the fan component 520 is in reserve:

[0082] The compressed air supply component 510 alone supplies gas to each cabin through the compressed air cold and heat separation component 530. When the compressed air runs out or the pressure is lower than the limit value, the equipment automatically alarms, and the control valve of the compressed air can be manually or automatically closed, and the fan component 520 can be manually or automatically opened for air supply by the fan air supply component.

[0083] The second way is the mode where the fan component 520 supplies air and the compressed air supply component 510 is in reserve:

[0084] The fan component 520 supplies gas alone. When the rotational speed sensor of the motor 710 shows a low rotational speed and the barometer 210 shows a low pressure signal at the same time, the equipment alarms, and the fan component 520 can be manually and automatically closed.

[0085] If the pressure shown by the upstream pressure sensor of the compressed air supply component 510 is lower than the set value and the control switch of the motor 710 is in the power-off state, the equipment emits an emergency alarm signal of losing all gas supply functions in various ways such as sound and light.

[0086] The third way is the combined air supply mode:

[0087] In this operating mode, mainly when the fan component 520 supplies air, if the external ambient air temperature of the cabin is too low or too high, for the need to control the internal environment temperature of the transition cabin, combined air supply is carried out, and the compressed air supply component 510 provides corresponding cold and hot air to the cold and heat separation component 530 to adjust the temperature.

[0088] It can be understood that the two power gas sources in the total air supply loop are backup to each other:

[0089] In this system, when the main power supply is lost, the electric fan assembly 520 fails, and there is compressed air supply, it can be manually and automatically switched to the compressed air supply circuit to maintain the air supply. Similarly, after the compressed air supply is lost, when the power supply exists, the air supply can be manually or automatically maintained. Since the nature of the compressed air power source is different from that of the power supply, and the probability of losing both types of power sources simultaneously is very small, the reliability of the air supply in this system is very high;

[0090] When compressed air is used as the power, by using the vortex tube technology, it is possible to supply air at three different temperatures as needed. Due to the simple structure and working characteristics of the vortex tube, the reliability and stability of the compressed air supply and temperature control equipment are very high. Moreover, compared with air-conditioning systems based on other working principles, the structure is simple and it is convenient to use in extreme situations.

[0091] Figure 6 It is shown that in one embodiment, the hot and cold separation component 530 may include several vortex tubes, and the outside of the vortex tubes is wrapped with heat insulation materials. The vortex tube has the following advantages: wide temperature range of the working medium: according to the current research on vortex tubes, the lowest temperature at the cold end of the vortex tube can reach -46°C, and the highest temperature at the hot end can reach 127°C; pollution-free: using the vortex tube as a refrigeration device, unlike traditional refrigeration equipment where refrigerant leakage can pollute the environment and prevent the harm to the human respiratory system caused by refrigerant leakage; the vortex tube has a simple structure, no moving parts, high reliability, and is easy to maintain; fast startup, simple temperature and flow regulation;

[0092] Figures 1 to 7 It shows a usage method of a mobile transition cabin system for nuclear emergency use in one embodiment of the present invention, which may include the following steps:

[0093] Step S1, continuously introduce air with a pressure higher than the atmospheric pressure into the connection cabin 200, the preparation cabin 300, and the air shower cabin 400. The pressure of the air introduced into the connection cabin 200 is greater than the pressure of the air introduced into the preparation cabin 300, and the pressure of the air introduced into the preparation cabin 300 is greater than the pressure of the air introduced into the air shower cabin 400;

[0094] Step S2, when it is detected that the user enters the air shower cabin 400, close the protective doors 110 at both ends of the air shower cabin 400, blow the user through the spraying device arranged above the air shower cabin 400, and the collection device 420 collects the gas and discharges it outside the air shower cabin. When the signal that the user confirms that the protective door between the air shower cabin 400 and the preparation cabin 300 can be opened is detected, open the protective door 110 close to the preparation cabin 300;

[0095] Step S3: When it is detected that the user enters the preparation cabin 300, close the protective door 110 at the connection between the air shower cabin 400 and the preparation cabin 300. When it is detected that the user confirms the signal to open the protective door between the preparation cabin 300 and the connection cabin 200, then open the protective door.

[0096] Step S4: When it is detected that the user enters the connection cabin 200, close the protective door between the preparation cabin 300 and the connection cabin 200, and then open the protective door 110 between the emergency habitable area 100 and the connection cabin 200. When it is detected that the user enters the emergency habitable area 100, close the protective door 110 between the emergency habitable area 100 and the connection cabin 200.

[0097] Furthermore, when returning to the habitable area from the outside, in this area, the radioactive protective mask should not be removed to prevent the air in this area from being radioactively contaminated.

[0098] Figure 7 The steps of exiting the cabin in one embodiment may include the following:

[0099] Step S11: Continuously introduce air with a pressure higher than the atmospheric pressure into the connection cabin 200, the preparation cabin 300, and the air shower cabin 400. The pressure of the air introduced into the connection cabin 200 is greater than the pressure of the air introduced into the preparation cabin 300, and the pressure of the air introduced into the preparation cabin 300 is greater than the pressure of the air introduced into the air shower cabin 400.

[0100] Step S12: Open the protective door 110 between the emergency habitable area 100 and the connection cabin 200. When it is detected that the user enters the connection cabin 200, close the protective door 110 between the emergency habitable area 100 and the connection cabin 200, and then open the protective door 110 between the preparation cabin 300 and the connection cabin 200.

[0101] Step S13: When it is detected that the user confirms the signal to open the protective door between the air shower cabin 400 and the preparation cabin 300, then open the protective door 110 at the connection between the air shower cabin 400 and the preparation cabin 300. When it is detected that the user enters the air shower cabin 400, then close the protective door 110 at the connection between the air shower cabin 400 and the preparation cabin 300, and open the protective door 110 at the connection between the air shower cabin 400 and the external environment to enter the external environment.

[0102] Figure 7 It is shown that when there is no one entering or exiting, in one embodiment, it may include continuously introducing air with a pressure higher than the atmospheric pressure into the preparation cabin 300 and the air shower cabin 400, and the air pressure in the preparation cabin 300 is greater than the air pressure in the air shower cabin 400.

[0103] The air supply unit 500 further includes: a first switching valve 610, a second switching valve 620, a third switching valve 630, a fourth switching valve 640, a fifth switching valve 650, a sixth switching valve 660, a seventh switching valve 670, an eighth switching valve 680, a ninth switching valve 690, an exhaust fan 700, a motor 710, a tachometer 720, and a bag filter 730.

[0104] It can be understood that the bag filter 730 filters out the particles in the air discharged from the air shower cabin 400, collects and processes them centrally, or can also be directly discharged without passing through the bag filter 730.

[0105] Unmanned passage mode:

[0106] When the transition cabin is installed in place, the boundary door and the protection door 110 of the emergency habitable area 100 are closed, and there is no one passing through. During this period, the first switching valve 610, the third switching valve 630, the fourth switching valve 640, the sixth switching valve 660, and the ninth switching valve 690 are closed; the second switching valve 620, the seventh switching valve 670, and the eighth switching valve 680 are opened. The total air supply circuit provides a small flow of filtered air supply. The filtered fresh air enters the preparation cabin 300 through the second switching valve 620, then enters the air shower cabin 400 through the seventh switching valve 670, and finally is discharged out of the cabin through the eighth switching valve 680, forming a flow direction of filtered air from the preparation cabin 300 → the air shower cabin 400 → the atmosphere, so as to maintain the minimum slightly positive pressure, temperature, and air change rate of the preparation cabin 300 and the air shower cabin 400.

[0107] (2) Mode of leaving the cabin:

[0108] When a person enters the connection cabin 200 and is about to leave the emergency habitable area 100, an out-of-cabin signal is sent in a voice, button, or touch manner. Then the second switching valve 620, the fourth switching valve 640, the sixth switching valve 660, and the ninth switching valve 690 are closed; the first switching valve 610 and the third switching valve 630 are opened; the fifth switching valve 650, the seventh switching valve 670, and the eighth switching valve 680 are opened, forming a flow direction of filtered air from the connection cabin 200 → the preparation cabin 300 → the air shower cabin 400 → the atmosphere.

[0109] Personnel make preparations for leaving the cabin inside the connecting cabin 200, wearing and arranging small protective equipment. Open the protective door 110 at the connecting cabin 200, enter the preparation cabin 300, and close the protective door 110 of the connecting cabin 200. Prepare and wear larger protective equipment such as paper gowns and gas cylinders in the preparation cabin 300. After confirming that the protective equipment is worn properly, open the protective door 110 of the preparation cabin 300, enter the air shower cabin 400, and close the protective door 110 of the preparation cabin 300. After confirming that the personnel and protection are all ready, open the protective door 110 of the air shower cabin 400, enter the outside polluted air, and then close the protective door 110 of the air shower cabin 400. Before leaving the cabin, send out a signal for leaving the cabin. After the ventilation system maintains the operation mode for leaving the cabin for 5 minutes, it switches to the operation mode without personnel passage, aiming to discharge the radioactive air brought into the air shower cabin 400 from the outside polluted air when opening the protective door 110 of the air shower cabin 400.

[0110] (3) Method of entering the cabin:

[0111] When personnel are about to enter the emergency habitable area 100, first open the protective door 110 of the air shower cabin 400, and close the protective door 110 of the air shower cabin 400 after entering. After sending out a spray signal in voice, button or touch mode, the second switching valve 620, the fourth switching valve 640, the sixth switching valve 660, and the eighth switching valve 680 close, while the first switching valve 610, the third switching valve 630, the fifth switching valve 650, the seventh switching valve 670, and the ninth switching valve 690 open. The total air supply loop quickly increases the air supply volume, and the exhaust fan 700 starts and increases the exhaust volume. The direction of air flow in the cabin is: connecting cabin 200 → preparation cabin 300 → air shower cabin 400 → atmosphere. Inside the air shower cabin 400, purified air with a certain pressure head sprays downward from the spray device 410 above the cabin, purging the surface of the protective equipment of the entering personnel. The blown-off dust, aerosol, and dirt on the soles are suctioned by the negative-pressure air in the collection device 420, filtered through the bag filter 730, and the exhaust is directly discharged into the polluted air outside the cabin.

[0112] Personnel in the air shower cabin 400 can also use the dust suction pipe connected to the collection device 420 to specifically suck dust from equipment such as gas cylinders or suspected parts as needed.

[0113] After a signal to stop the air shower is sent out by voice, button or touch, the exhaust fan 700 stops running, the second switching valve 620, the fourth switching valve 640, the sixth switching valve 660, and the ninth switching valve 690 close, and the first switching valve 610, the third switching valve 630, the fifth switching valve 650, the seventh switching valve 670, and the eighth switching valve 680 open. The total air supply loop reduces the air supply volume, and the ventilation operates in the out-of-cabin mode. The direction of air flow in the cabin is: connecting cabin 200 → preparation cabin 300 → air shower cabin 400 → atmosphere. Inside the air shower cabin 400, personnel remove some protective gear used in the externally polluted air, such as plastic gloves, shoe covers, and paper gowns, and replace them with cloth gloves and shoe covers for temporary use inside the cabin, preparing to enter the preparation cabin 300.

[0114] After opening the protective door 110 of the preparation cabin 300 and entering the preparation cabin 300, close the protective door 110 of the preparation cabin 300. Inside the preparation cabin 300, it is necessary to use a radioactive surface contamination instrument to detect the surface contamination of the hands, the outer surface of the body, and the carried protective gear, and use means such as decontamination liquid for decontamination when necessary. After confirming no contamination, prepare and remove the temporary protective gear, and prepare to enter the connecting cabin 200.

[0115] Open the protective door 110 of the connecting cabin 200, enter the connecting cabin 200, close the protective door 110 of the connecting cabin 200, and send a signal to enter the emergency habitable area 100 by voice, button or touch. The entire ventilation system of the transition cabin returns to the mode of no personnel passage, and personnel open the boundary door to enter the emergency habitable area 100.

[0116] It can be understood that the above embodiments only represent the preferred embodiments of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent of the present invention; it should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, the above technical features can be freely combined, and several deformations and improvements can also be made, which all belong to the protection scope of the present invention; therefore, all equivalent transformations and modifications made to the scope of the claims of the present invention should fall within the scope covered by the claims of the present invention.

Claims

1. A mobile transition cabin system for nuclear emergency use, characterized in that: include: A connecting cabin (200) for communicating with an emergency habitable area (100), a preparation cabin (300) for storing nuclear radiation protection supplies, an air shower cabin (400) for sweeping loose dust and adsorbed aerosols on the surface of human protective equipment, a connecting unit (120) for connecting the emergency habitable area (100), the connecting cabin (200), the preparation cabin (300), and the air shower cabin (400), an air supply unit (500) for supplying air to the connecting cabin (200), the preparation cabin (300), and the air shower cabin (400), and a protective door (110) provided at the connection of the emergency habitable area (100), the connecting cabin (200), the preparation cabin (300), and the air shower cabin (400); The indoor air pressure of the connection cabin (200) is greater than the indoor air pressure of the maintenance cabin (300), the indoor air pressure of the maintenance cabin (300) is greater than the indoor air pressure of the air shower cabin (400), the indoor air pressure of the air shower cabin (400) is greater than the external environment pressure, and the protective door (110) is provided at the connection point between the air shower cabin (400) and the external environment.

2. The mobile transition cabin system for nuclear emergency use according to claim 1, characterized in that: The protective door (110) separates the emergency habitable area (100), the connection cabin (200), the maintenance cabin (300), and the air shower cabin (400) into a plurality of independent spaces.

3. The mobile transition cabin system for nuclear emergency use according to claim 2, characterized in that: The connection unit (120) is provided with a passage for pedestrians to pass through, the passage is communicated with the protection door (110), the connection unit (120) is arranged around the protection door (110), and the connection unit (120) isolates the space inside and outside the protection door (110) and does not interfere with the normal opening of the protection door (110).

4. The mobile transition cabin system for nuclear emergency use according to claim 1, characterized in that: The air shower cabin (400) comprises a spray device (410) for sweeping away loose dust and adsorbed aerosol on the surface of human protective equipment, a collection device (420) for collecting dust, and an exhaust device (430) for exhausting gas, wherein the spray device (410) is arranged at the upper part of the air shower cabin (400) and discharges air downward, the collection device (420) is arranged at the bottom of the air shower cabin (400), and the exhaust device (430) is connected to the collection device (420).

5. The mobile transition cabin system for nuclear emergency use according to claim 1, characterized in that: The air supply unit (500) comprises a compressed air supply component (510), a fan component (520), a cold and hot separation component (530) and a filter component (540); the fan component (520) is connected to the filter component (540) to form an external air path; the cold and hot separation component (530) is provided with an inlet, a normal temperature air outlet (550), a cold air outlet (560) and a hot air outlet (570); the compressed air supply component (510) is connected to the inlet; the cold air outlet (560) is connected to the filter component (540) to form a cold air path; the hot air outlet (570) is connected to the filter component (540) to form a hot air path; the normal temperature air outlet (550) is connected to the filter component (540) to form a normal temperature air path; and the filter component (540) is connected to the connection cabin (200), the maintenance cabin (300), the air shower cabin (400) and the connection unit (120).

6. The mobile transition cabin system for nuclear emergency use according to claim 5, characterized in that: The cold air path is provided with a first exhaust branch pipe (561), a cold air control valve (562) and a cold air temperature sensor (563); the cold air control valve (562) is arranged between the cold air outlet (560) and the filter assembly (540); the first exhaust branch pipe (561) is connected to the outside air; and the cold air temperature sensor (563) is arranged between the cold air control valve (562) and the filter assembly (540).

7. The mobile transition cabin system for nuclear emergency use according to claim 5, characterized in that: The cold and hot separation component (530) is composed of a plurality of vortex tubes, and the outside of the vortex tubes is wrapped with heat insulation material.

8. A method for using a mobile transition chamber system for nuclear emergency, applied to the mobile transition chamber system for nuclear emergency according to any one of claims 1 to 7, characterized in that: The following steps are involved: Step S1, continuously introducing air with a pressure higher than atmospheric pressure into the connecting cabin (200), the maintenance cabin (300), and the air shower cabin (400), wherein the pressure of the air introduced into the connecting cabin (200) is greater than the pressure of the air introduced into the maintenance cabin (300), and the pressure of the air introduced into the maintenance cabin (300) is greater than the pressure of the air introduced into the air shower cabin (400); Step S2, when it is detected that a user enters the air shower cabin (400), the protective doors (110) at both ends of the air shower cabin (400) are closed, the user is purged by a spray device arranged above the air shower cabin (400), the gas is collected by a collection device (420) and discharged out of the air shower cabin, and a signal is detected that the user confirms that the protective door between the air shower cabin (400) and the maintenance cabin (300) can be opened, and the protective door (110) close to the maintenance cabin (300); Step S3, when it is detected that a user has entered the preparation cabin (300), the protective door (110) at the connection between the air shower cabin (400) and the preparation cabin (300) is closed, and when a signal confirming that the user can open the protective door between the preparation cabin (300) and the connection cabin (200) is detected, the protective door is opened again; Step S4, when it is detected that a user enters the connecting cabin (200), the protective door between the preparation cabin (300) and the connecting cabin (200) is closed, and then the protective door (110) between the emergency habitable area (100) and the connecting cabin (200) is opened; when it is detected that a user enters the emergency habitable area (100), the protective door (110) between the emergency habitable area (100) and the connecting cabin (200) is closed.

9. The method for using the mobile transition chamber system for nuclear emergency according to claim 8, characterized in that: When a user enters the emergency habitable area (100) and then exits the cabin, the following steps are included: Step S11, continuously introducing air with a pressure higher than atmospheric pressure into the connecting cabin (200), the maintenance cabin (300), and the air shower cabin (400), wherein the pressure of the air introduced into the connecting cabin (200) is greater than the pressure of the air introduced into the maintenance cabin (300), and the pressure of the air introduced into the maintenance cabin (300) is greater than the pressure of the air introduced into the air shower cabin (400); Step S12, opening the protective door (110) between the emergency habitable area (100) and the connecting cabin (200), and when detecting that a user has entered the connecting cabin (200), closing the protective door (110) between the emergency habitable area (100) and the connecting cabin (200), and then opening the protective door (110) between the maintenance cabin (300) and the connecting cabin (200); Step S13, when a signal is detected that the user confirms that the protective door between the air shower cabin (400) and the maintenance cabin (300) can be opened, the protective door (110) at the connection between the air shower cabin (400) and the maintenance cabin (300) is then opened; when a user is detected entering the air shower cabin (400), the protective door (110) at the connection between the air shower cabin (400) and the maintenance cabin (300) is then closed, and the protective door (110) provided at the connection between the air shower cabin (400) and the external environment is opened to enter the external environment.

10. The method for using the mobile transition cabin system for nuclear emergency according to claim 8, characterized in that: When no one enters, the maintenance cabin (300) and the air shower cabin (400) continuously flow air with a pressure higher than the atmospheric pressure, and the air pressure in the maintenance cabin (300) is greater than the air pressure in the air shower cabin (400).

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