Radioactive pollution gas treatment shelter and method

Abstract

The invention relates to the technical field of radioactive pollution gas treatment, in particular to a radioactive pollution gas treatment shelter and method. The square cabin is provided with an electrical control area and a purification equipment area, and the electrical control area and the purification equipment area are separated by a radiation shielding layer; the purification equipment area is provided with a gas pretreatment module, a gas purification module, a centrifugal fan and an airborne effluent activity and concentration monitoring device. The radioactive pollution gas treatment method comprises a low-power treatment mode and a high-power treatment mode. The integrated design is adopted, an emergency exhaust system of a radioactive pollution gas source can be rapidly connected in a butt joint mode, guided-out high-temperature and high-humidity radioactive pollution gas is purified, and therefore the radiation safety of workers and the surrounding environment is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of radioactive contaminated gas treatment, and in particular to a radioactive contaminated gas treatment cabin and method. Background Art

[0002] Radioactive aerosols and radioactive gaseous wastes may be generated in uranium mining, ore dressing and hydrometallurgy, refining and conversion, uranium isotope separation, nuclear fuel element preparation, nuclear reactor operation, nuclear fuel reprocessing, radioactive waste treatment, isotope production and application, and other radioactive material operations. The main purpose of radioactive gaseous waste purification is to remove or reduce radioactive pollutants and protect workers, the public and the environment.

[0003] Commonly used methods for treating radioactive contaminated gases mainly include decay storage and fixed treatment devices. When the fixed treatment device fails or the nuclear power plant fails and the processing capacity of the fixed treatment device is exceeded, it is difficult to achieve complete storage of the radioactive contaminated gas, and emergency treatment of the radioactive contaminated gas is required. Summary of the invention

[0004] In view of the defects in the prior art, the purpose of the present invention is to provide a radioactive contaminated gas treatment cabin and method to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A radioactive contaminated gas treatment cabin, comprising a cabin, the cabin is provided with an electrical control area and a purification equipment area, the electrical control area and the purification equipment area are separated by a radiation shielding layer; the purification equipment area is provided with a gas pretreatment module, a gas purification module, a centrifugal fan and an airborne effluent activity concentration monitoring device; the gas pretreatment module inlet is connected to a radioactive contaminated gas source, the gas pretreatment module outlet is connected to the gas purification module inlet, the gas purification module outlet is connected to the centrifugal fan inlet, and the centrifugal fan outlet is connected to the atmosphere; the centrifugal fan outlet is provided with a sampling port, and the airborne effluent activity concentration monitoring device is connected to the sampling port; the gas pretreatment module comprises a refrigeration and dehumidification component and a heater component, the refrigeration and dehumidification component comprises a heat pipe heat exchanger, an evaporator, a condenser, a compressor and a cooling fan, which are used to cool and dehumidify the radioactive contaminated gas; the heat pipe heat exchanger is divided into a condensation part and an evaporation part; the cooling fan inlet is connected to the atmosphere, the cooling fan outlet is connected to the condensation part inlet, and the The outlet of the condensation part is connected to the atmosphere, and the ambient air is sucked by the cooling fan and then discharged to the atmosphere through the condensation part; the inlet of the evaporation part is connected to the source of radioactive contaminated gas, the outlet of the evaporation part is connected to the inlet of the evaporator, and the outlet of the evaporator is connected to the inlet of the heater assembly; the heater assembly includes a junction box, an electric heating wire and a shell, which is used to heat and dehumidify the radioactive contaminated gas; the electric heating wire is arranged in the shell, and the air inlet of the shell is provided with an air inlet branch pipe I and an air inlet branch pipe II, the air inlet branch pipe I is connected to the source of radioactive contaminated gas through a pipeline, and the air inlet branch pipe II is connected to the outlet of the evaporator; the gas purification module includes a pre-filter, a pre-filter, an iodine adsorption filter and a post-filter, the inlet of the pre-filter is connected to the outlet of the heater assembly, the outlet of the pre-filter is connected to the inlet of the pre-filter, the outlet of the pre-filter is connected to the inlet of the iodine adsorption filter, the outlet of the iodine adsorption filter is connected to the inlet of the post-filter, and the outlet of the post-filter is connected to the inlet of the centrifugal fan.

[0007] The electrical control area, the refrigeration and dehumidification component, the pre-filter and the iodine adsorption filter are provided with gamma radiation monitoring sensors; the gas pretreatment module and the gas purification module are provided with temperature sensors, humidity sensors and pressure sensors; the centrifugal fan is provided with current sensors, air volume sensors and pressure sensors.

[0008] The electrical control area is provided with a monitoring host, a control host, a display terminal and a power supply and distribution system; the monitoring host is respectively connected to the gas pretreatment module, the gas purification module, the centrifugal fan, and the monitoring sensors of the power supply and distribution system; the control host is respectively connected to the gas pretreatment module, the centrifugal fan, and the controlled end of the power supply and distribution system; the display terminal is respectively connected to the monitoring host, the control host and the airborne effluent activity concentration monitoring device; the power supply and distribution system includes a generator set, a distribution cabinet and cables, which are used to supply power to the equipment in the other cabin.

[0009] Furthermore, the radiation shielding layer is made of lead and has a thickness of 5 to 10 mm.

[0010] A method for treating radioactive contaminated gas is completed by using the above-mentioned radioactive contaminated gas treatment cabin, including a low-power treatment mode and a high-power treatment mode:

[0011] The low-power processing mode is: when the temperature of the radioactive contaminated gas is less than 70°C and the humidity is less than 60%RH, the power supply and distribution system supplies power to the equipment in the cabin, closes the front pipeline of the refrigeration and dehumidification component, opens the air intake branch pipe I, and turns on the centrifugal fan. The radioactive contaminated gas enters the heater component from the air intake branch pipe I, and enters the gas purification module after being discharged from the heater component. Impurities and radioactive substances in the radioactive contaminated gas are removed in the gas purification module, and the clean gas is discharged from the outlet of the gas purification module into the centrifugal fan. When the airborne effluent activity concentration monitoring device samples and monitors the exhaust gas at the outlet of the centrifugal fan and it is qualified, it is discharged into the atmosphere.

[0012] The high-power processing mode is: when the temperature of the radioactive contaminated gas is greater than 70°C and the humidity is greater than 60%RH, the power supply and distribution system supplies power to the equipment in the cabin, closes the air intake branch pipe I, opens the front pipeline of the refrigeration and dehumidification component, turns on the centrifugal fan, and the radioactive contaminated gas enters the evaporation part of the heat pipe heat exchanger, and the radioactive contaminated gas is cooled to 50°C. After the radioactive contaminated gas is discharged from the evaporation part, it enters the evaporator, and the radioactive contaminated gas is cooled to 40°C. After the radioactive contaminated gas is discharged from the evaporator, it enters the heater component through the air intake branch pipe II for heating, so that the radioactive contaminated gas maintains a humidity of 60%RH, and enters the gas purification module after being discharged from the heater component. Impurities and radioactive substances in the radioactive contaminated gas are removed in the gas purification module, and the clean gas is discharged from the outlet of the gas purification module into the centrifugal fan. When the airborne effluent activity concentration monitoring device samples and monitors the exhaust gas at the outlet of the centrifugal fan, it is discharged into the atmosphere. Compared with the prior art, the beneficial effects of the present invention are:

[0013] 1. The integrated design can quickly connect to the emergency exhaust system of the radioactive contaminated gas source and continuously purify the radioactive contaminated gas, thereby ensuring the radiation safety of the staff, the public and the surrounding environment.

[0014] 2. The use of standardized cabins allows transportation by various vehicles such as cars and trains, without being restricted by the time and location of discharge, thus improving efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is an isometric side view structural schematic diagram of the radioactive contaminated gas treatment cabin of the present invention;

[0016] Figure 2 It is a schematic diagram of the right side isometric view of the internal structure of the radioactive contaminated gas treatment cabin of the present invention;

[0017] Figure 3 It is a schematic diagram of the left side isometric view of the internal structure of the radioactive contaminated gas treatment cabin of the present invention;

[0018] Figure 4 This is a schematic diagram of the lead shielding structure of the radioactive contaminated gas treatment cabin of the present invention;

[0019] Figure 5 This is a schematic diagram of the structure of the refrigeration and dehumidification assembly of the radioactive contaminated gas treatment cabin of the present invention;

[0020] Figure 6 A top view of a heater assembly of a radioactive contaminated gas treatment cabin according to the present invention;

[0021] Figure 7 It is a left side view of the heater assembly of the radioactive contaminated gas processing cabin of the present invention;

[0022] Figure 8 It is an isometric structural schematic diagram of a heater assembly of a radioactive contaminated gas treatment cabin of the present invention;

[0023] Fig. 9 It is a front view of the air purification module of the radioactive contaminated gas treatment cabin of the present invention;

[0024] Fig.10 It is an isometric structural schematic diagram of an air purification module of a radioactive contaminated gas treatment cabin of the present invention;

[0025] Fig.11 It is a schematic diagram of the process of the radioactive contaminated gas treatment cabin of the present invention;

[0026] Fig.12 The figure is a schematic diagram of the electrical flow of the radioactive contaminated gas treatment cabin of the present invention.

[0027] In the figure: 1-cabin, 2-electrical control area, 3-purification equipment area, 4-radiation shielding layer, 21-monitoring host, 22-control host, 23-display terminal, 24-power supply and distribution system, 25-generator set, 31-gas pretreatment module, 32-gas purification module, 33-centrifugal fan, 34-gas-borne effluent activity concentration monitoring device, 301-intake branch pipe I, 302-intake branch pipe II, 311-refrigeration and dehumidification component, 312-heater component, 321-pre-filter, 322-pre-filter, 323-iodine adsorption filter, 324-post-filter, 3111-heat pipe heat exchanger, 3112-evaporator, 3113-condenser, 3114-compressor, 3115-cooling fan, 3116-condensation part, 3117-evaporation part, 3121-junction box, 3122-electric heating wire, 3123-shell. DETAILED DESCRIPTION

[0028] The following is a detailed description of an embodiment of the present invention. This embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation method and a specific operation process are given, but the protection scope of the present invention is not limited to the following embodiment.

[0029] like Figure 1-Figure 4 As shown, a radioactive contaminated gas treatment cabin comprises a cabin (1), wherein the cabin (1) is provided with an electrical control area (2) and a purification equipment area (3), wherein the electrical control area (2) and the purification equipment area (3) are separated by a radiation shielding layer (4).

[0030] The cabin (1) cabin frame is made of stainless steel and is assembled and welded by special tooling. When the cabin panels are closed, steel connectors are welded between the end faces of the panels; each side wall and the platform are also connected by electric welding with steel connectors; this ensures the connection strength between the panels.

[0031] The front side of the shelter (1) is provided with double doors for starting the generator set (25) and for the local instrument display of the control cabinet and the power cabinet, and for later maintenance and repair. A door is provided at the middle position on the left side of the shelter (1) for the operation, maintenance and installation of process equipment and the placement and retrieval of temporarily stored items. The rear end of the shelter (1) is provided with double doors for the installation of process equipment and the maintenance and repair of the refrigeration and dehumidification components (311); a lead plate shielding layer is provided between the generator set (25) cabin and the electrical control area (2) and the purification equipment area (3) to reduce the harm to the health of the workers caused by the small amount of radiation from the purification equipment area (3) and protect the personal safety of the workers. It is also used to distinguish the contaminated area (purification equipment area (3)) and the clean area (generator set (25) cabin and electrical control area (2)) electrical cabinet room.

[0032] like Figure 1-Figure 4 , Fig.11 The purification equipment area (3) is provided with a gas pretreatment module (31), a gas purification module (32), a centrifugal fan (33) and an airborne effluent activity concentration monitoring device (34); the inlet of the gas pretreatment module (31) is connected to a radioactive contaminated gas source, the outlet of the gas pretreatment module (31) is connected to an inlet of the gas purification module (32), the outlet of the gas purification module (32) is connected to an inlet of the centrifugal fan (33), and the outlet of the centrifugal fan (33) is connected to the atmosphere; the outlet of the centrifugal fan (33) is provided with a sampling port, and the airborne effluent activity concentration monitoring device (34) is connected to the sampling port.

[0033] like Figure 5-Figure 8 As shown, the gas pre-processing module (31) comprises a refrigeration and dehumidification component (311) and a heater component (312). The refrigeration and dehumidification component (311) comprises a heat pipe heat exchanger (3111), an evaporator (3112), a condenser (3113), a compressor (3114) and a cooling fan (3115), and is used to cool and dehumidify radioactive contaminated gas; the heat pipe heat exchanger (3111) is divided into a condensation part (3116) and an evaporation part (3117); the inlet of the cooling fan (3115) is connected to the atmosphere, the outlet of the cooling fan (3115) is connected to the inlet of the condensation part (3116), the outlet of the condensation part (3116) is connected to the atmosphere, and the ambient air is sucked into the cooling fan (3115) and discharged to the atmosphere through the condensation part (3116); the inlet of the evaporation part (3117) is connected to a source of radioactive contaminated gas, the outlet of the evaporation part (3117) is connected to the inlet of the evaporator (3112), and the outlet of the evaporator (3112) is connected to the inlet of the heater component (312).

[0034] like Figure 6-Figure 8 As shown, the heater assembly (312) comprises a junction box (3121), an electric heating wire (3122) and a shell (3123), and is used to heat and dehumidify radioactive contaminated gas; the electric heating wire (3122) is arranged in the shell (3123), and the air inlet of the shell (3123) is provided with an air inlet branch pipe I (301) and an air inlet branch pipe II (302), the air inlet branch pipe I (301) is connected to a radioactive contaminated gas source through a pipeline, and the air inlet branch pipe II (302) is connected to an outlet of the evaporator (3112); a temperature transmitter is provided at the heating position and outlet of the shell (3123) of the heater assembly (312), which can not only monitor the internal temperature of the shell (3123) of the heater assembly (312) in real time to avoid dry burning of the heater assembly (312), but also detect and remotely transmit the temperature of the radioactive contaminated gas entering the gas purification module (32).

[0035] The system first sends the 110°C high-temperature radioactive contaminated gas into the evaporation part (3117) of the heat pipe heat exchanger (3111) through the centrifugal fan (33), and the temperature is reduced to 50°C through heat exchange in the heat pipe heat exchanger (3111), and then further cooled to the target temperature of 40°C through the evaporator (3112). The airflow flows through the water baffle (made of rust-proof aluminum 5A03) to condense and liquefy into water, thereby reducing the moisture content in the high-temperature radioactive contaminated gas. In order to avoid excessive humidity causing the service life of the gas purification module (32) to be shortened, the temperature does not reach the designed relative temperature and humidity after it drops to 40°C, and the rear end of the refrigeration and dehumidification component (311) is heated for secondary dehumidification. The heater component (312) is used for heating and dehumidification. The main body material is 304 stainless steel. The radioactive contaminated gas entering the gas purification module (32) is heated so that the radioactive contaminated gas maintains 60%RH.

[0036] like Fig. 9 , Fig.10 As shown, the gas purification module (32) comprises a pre-filter (321), a front filter (322), an iodine adsorption filter (323) and a rear filter (324); the inlet of the pre-filter (321) is connected to the outlet of the heater assembly, the outlet of the pre-filter (321) is connected to the inlet of the pre-filter (322), the outlet of the pre-filter (322) is connected to the inlet of the iodine adsorption filter (323), the outlet of the iodine adsorption filter (323) is connected to the inlet of the rear filter (324), and the outlet of the rear filter (324) is connected to the inlet of the centrifugal fan (33); in order to ensure the service life of the gas purification module (32) and the requirements of the final exhaust, the temperature and humidity of the radioactive waste gas need to be controlled below 70°C and 60%RH through the gas pretreatment module (31).

[0037] like Fig.12As shown, the electrical control area (2), the refrigeration and dehumidification component (311), the pre-filter (322) and the iodine adsorption filter (323) are provided with gamma radiation monitoring sensors; the gas pretreatment module (31) and the gas purification module (32) are provided with temperature sensors, humidity sensors and pressure sensors; the centrifugal fan (33) is provided with a current sensor, an air volume sensor and a pressure sensor; the electrical control area (2) is provided with a monitoring host (21), a control host (22), a display terminal (23) and a power supply and distribution system (24); The monitoring host (21) is respectively connected to the monitoring sensors of the gas pretreatment module (31), the gas purification module (32), the centrifugal fan (33), and the power supply and distribution system (24); the control host (22) is respectively connected to the gas pretreatment module (31), the centrifugal fan (33), and the controlled end of the power supply and distribution system (24); the display terminal (23) is respectively connected to the monitoring host (21), the control host (22) and the airborne effluent activity concentration monitoring device (34); the power supply and distribution system (24) includes a generator set (25), a power distribution cabinet and cables, which are used to supply power to the equipment in the other cabin. The monitored parameters include positive pressure monitoring, online monitoring of airborne effluent activity concentration, filter pressure difference monitoring, exhaust volume monitoring, pre-purification temperature and humidity monitoring, main equipment operation status monitoring, etc. The power distribution system is provided with protection functions such as leakage voltage, leakage current, overvoltage, overcurrent and grounding alarm, which can effectively ensure the safety of people and machines.

[0038] Furthermore, the radiation shielding layer (4) is made of lead and has a thickness of 5 to 10 millimeters.

[0039] According to the Basic Standard for Ionizing Radiation Protection and Radiation Source Safety (GB18871-2002), the dose constraint value for professional workers is 5mSv / a. Based on the calculation that the same worker works 250 hours a year, the dose rate in the cockpit is controlled to be no more than 20μSv / h. The thickness of the lead plate is initially designed to be 5 mm, which can ensure that the dose rate in the vehicle cab of the square cabin is less than 0.02mSv / h. The thicker the lead shielding layer, the lower the dose rate, but the cost and weight will also increase. After comprehensive calculation, the thickness of 5 to 10 mm is the best thickness.

[0040] A method for treating radioactive contaminated gas using the above-mentioned shelter includes a low-power treatment mode and a high-power treatment mode:

[0041] like Fig.11As shown, the low-power processing mode is: when the temperature of the radioactive contaminated gas is less than 70° C. and the humidity is less than 60% RH, the power supply and distribution system (24) supplies power to the equipment in the cabin (1), closes the pipeline in front of the refrigeration and dehumidification component (311), opens the air intake branch pipe I (301), and turns on the centrifugal fan (33), so that the radioactive contaminated gas enters the heater component (312) from the air intake branch pipe I (301), is discharged from the heater component (312), and enters the gas purification module (32), where impurities and radioactive substances in the radioactive contaminated gas are removed, and the clean gas is discharged from the outlet of the gas purification module (32) and enters the centrifugal fan (33), and is discharged into the atmosphere after the exhaust gas at the outlet of the centrifugal fan (33) is sampled and monitored by the airborne effluent activity concentration monitoring device (34) and is found to be qualified.

[0042] like Fig.11 As shown, the high-power processing mode is: when the temperature of the radioactive contaminated gas is greater than 70°C and the humidity is greater than 60%RH, the power supply and distribution system (24) supplies power to the equipment in the cabin (1), closes the air intake branch pipe I (301), opens the front pipeline of the refrigeration and dehumidification component (311), turns on the centrifugal fan (33), and the radioactive contaminated gas enters the evaporation part (3117) of the heat pipe heat exchanger (3111), and the radioactive contaminated gas is cooled to 50°C. After the radioactive contaminated gas is discharged from the evaporation part (3117), it enters the evaporator (3112), and the radioactive contaminated gas is cooled to 40°C. During the two cooling processes, the water in the radioactive contaminated gas is reduced. The radioactive contaminated gas is condensed and flows out. After being discharged from the evaporator (3112), it enters the heater assembly (312) through the air inlet branch pipe II (302) to be heated so that the humidity of the radioactive contaminated gas is maintained at 60%RH. After being discharged from the heater assembly (312), it enters the gas purification module (32). Impurities and radioactive substances in the radioactive contaminated gas are removed in the gas purification module (32). Clean gas is discharged from the outlet of the gas purification module (32) and enters the centrifugal fan (33). When the exhaust gas at the outlet of the centrifugal fan (33) is sampled and monitored by the airborne effluent activity concentration monitoring device (34) and is found to be qualified, it is discharged into the atmosphere.

[0043] Treatment measures for unqualified exhaust gas sampling monitoring:

[0044] 1. Check the purification efficiency of the gas purification module (32). If the efficiency is insufficient, replace the filter material in time.

[0045] 2. Check whether the temperature and humidity of the gas entering the gas purification module (32) exceed 70°C and 60%RH. If the temperature and humidity exceed the standard, increase the power of the refrigeration and dehumidification equipment and the electric heater.

[0046] 3. The exhaust gas at the outlet of the centrifugal fan (33) is sampled and monitored to verify the accuracy of the online monitoring data of the effluent. If the sampling monitoring data meets the standard, it can continue to be used, but the online monitoring equipment should be repaired in time.

[0047] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A radioactive contaminated gas treatment cabin, comprising a cabin (1), characterized in that: The cabin (1) is provided with an electrical control area (2) and a purification equipment area (3), and the electrical control area (2) and the purification equipment area (3) are separated by a radiation shielding layer (4); The purification equipment area (3) is provided with a gas pretreatment module (31), a gas purification module (32), a centrifugal fan (33) and an airborne effluent activity concentration monitoring device (34); the inlet of the gas pretreatment module (31) is connected to a radioactive contaminated gas source, the outlet of the gas pretreatment module (31) is connected to the inlet of the gas purification module (32), the outlet of the gas purification module (32) is connected to the inlet of the centrifugal fan (33), and the outlet of the centrifugal fan (33) is connected to the atmosphere; the outlet of the centrifugal fan (33) is provided with a sampling port, and the airborne effluent activity concentration monitoring device (34) is connected to the sampling port; The gas pretreatment module (31) comprises a refrigeration and dehumidification component (311) and a heater component (312). The refrigeration and dehumidification component (311) comprises a heat pipe heat exchanger (3111), an evaporator (3112), a condenser (3113), a compressor (3114) and a cooling fan (3115), and is used to cool and dehumidify radioactive contaminated gas; the heat pipe heat exchanger (3111) is divided into a condensation part (3116) and an evaporation part (3117); the inlet of the cooling fan (3115) is connected to the atmosphere, the outlet of the cooling fan (3115) is connected to the inlet of the condensation part (3116), the outlet of the condensation part (3116) is connected to the atmosphere, and the ambient air is sucked into the cooling fan (3115) and discharged to the atmosphere through the condensation part (3116); the inlet of the evaporation part (3117) is connected to a source of radioactive contaminated gas, the outlet of the evaporation part (3117) is connected to the inlet of the evaporator (3112), and the outlet of the evaporator (3112) is connected to the inlet of the heater component (312); The heater assembly (312) comprises a junction box (3121), an electric heating wire (3122) and a shell (3123), and is used to heat and dehumidify radioactive contaminated gas; the electric heating wire (3122) is arranged in the shell (3123); an air inlet of the shell (3123) is provided with an air inlet branch pipe I (301) and an air inlet branch pipe II (302); the air inlet branch pipe I (301) is connected to a radioactive contaminated gas source through a pipeline, and the air inlet branch pipe II (302) is connected to an outlet of the evaporator (3112); The gas purification module (32) comprises a pre-filter (321), a front filter (322), an iodine adsorption filter (323) and a rear filter (324), wherein the inlet of the pre-filter (321) is communicated with the outlet of the heater assembly (312), the outlet of the pre-filter (321) is communicated with the inlet of the front filter (322), the outlet of the front filter (322) is communicated with the inlet of the iodine adsorption filter (323), the outlet of the iodine adsorption filter (323) is communicated with the inlet of the rear filter (324), and the outlet of the rear filter (324) is communicated with the inlet of the centrifugal fan (33); The electrical control area (2), the refrigeration and dehumidification component (311), the pre-filter (322) and the iodine adsorption filter (323) are provided with gamma radiation monitoring sensors; the gas pretreatment module (31) and the gas purification module (32) are provided with temperature sensors, humidity sensors and pressure sensors; the centrifugal fan (33) is provided with a current sensor, an air volume sensor and a pressure sensor; The electrical control area (2) is provided with a monitoring host (21), a control host (22), a display terminal (23) and a power supply and distribution system (24); the monitoring host (21) is respectively connected to the gas pretreatment module (31), the gas purification module (32), the centrifugal fan (33) and the monitoring sensor of the power supply and distribution system (24); the control host (22) is respectively connected to the gas pretreatment module (31), the centrifugal fan (33) and the controlled end of the power supply and distribution system (24); the display terminal (23) is respectively connected to the monitoring host (21), the control host (22) and the airborne effluent activity concentration monitoring device (34); the power supply and distribution system (24) includes a generator set (25), a power distribution cabinet and cables, and is used to supply power to the equipment in the other cabin.

2. A radioactive contaminated gas treatment shelter according to claim 1, characterized in that: The radiation shielding layer (4) is made of lead and has a thickness of 5 to 10 millimeters.

3. A method for treating radioactive contaminated gas using any one of claims 1 to 2, characterized in that: The radioactive contaminated gas treatment method includes a low-power treatment mode and a high-power treatment mode; The low-power processing mode is as follows: when the temperature of the radioactive contaminated gas is less than 70° C. and the humidity is less than 60% RH, the power supply and distribution system (24) supplies power to the equipment in the shelter (1), closes the pipeline in front of the refrigeration and dehumidification component (311), opens the air intake branch pipe I (301), and turns on the centrifugal fan (33), so that the radioactive contaminated gas enters the heater component (312) from the air intake branch pipe I (301), is discharged from the heater component (312), and enters the gas purification module (32), where impurities and radioactive substances in the radioactive contaminated gas are removed, and clean gas is discharged from the outlet of the gas purification module (32) and enters the centrifugal fan (33), and is discharged into the atmosphere after the exhaust gas at the outlet of the centrifugal fan (33) is sampled and monitored by the airborne effluent activity concentration monitoring device (34) and is found to be qualified; The high-power processing mode is as follows: when the temperature of the radioactive contaminated gas is greater than 70° C. and the humidity is greater than 60% RH, the power supply and distribution system (24) supplies power to the equipment in the cabin (1), closes the air intake branch pipe I (301), opens the front pipeline of the refrigeration and dehumidification component (311), turns on the centrifugal fan (33), and the radioactive contaminated gas enters the evaporation part (3117) of the heat pipe heat exchanger (3111), and the radioactive contaminated gas is cooled to 50° C. After the radioactive contaminated gas is discharged from the evaporation part (3117), it enters the evaporator (3112), and the radioactive contaminated gas is cooled to 40° C. The radioactive contaminated gas After being discharged from the evaporator (3112), the gas enters the heater assembly (312) through the air inlet branch pipe II (302) to be heated so that the humidity of the radioactive contaminated gas is maintained at 60% RH. After being discharged from the heater assembly (312), the gas enters the gas purification module (32), where impurities and radioactive substances in the radioactive contaminated gas are removed. The clean gas is discharged from the outlet of the gas purification module (32) and enters the centrifugal fan (33). When the exhaust gas at the outlet of the centrifugal fan (33) is sampled and monitored by the airborne effluent activity concentration monitoring device (34) and is found to be qualified, the clean gas is discharged into the atmosphere.

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