A portable detection equipment for nuclear accident fire rescue site

Abstract

The utility model belongs to fire rescue detection technical field, concretely is a kind of portable detection equipment for nuclear and chemical accident fire rescue scene. Including nuclear radiation and chemical comprehensive detection module, infrared spectrum analysis device, field sample detection tube, display screen, air pump, main control board and battery;Field sample detection tube is transparent tube, passes through comprehensive detection module and infrared spectrum analysis device in turn, field sample detection tube one end port is used as air inlet, and the other end port is connected air pump;Nuclear radiation and chemical comprehensive detection module can detect corresponding field sample detection tube in nuclear radiation and chemical component;Infrared spectrum analysis device detects the gas type in corresponding tube;Main control board is connected with nuclear radiation and chemical comprehensive detection module, infrared spectrum analysis device, display screen, air pump and battery.The utility model structure is simple, and it is convenient to operate, can quickly and effectively detect nuclear radiation, hazardous chemicals, toxic and harmful gas in the air of nuclear and biological chemical accident scene.

Description

Technical Field

[0001] This utility model belongs to the field of fire rescue detection technology, specifically relating to a portable detection equipment for use at the fire rescue site of a nuclear and chemical accident. Background Technology

[0002] In emergency rescue scenarios for special disasters such as nuclear and radiation accidents, hazardous chemical leaks, and fires and explosions, the atmospheric environment contains not only toxic and harmful gases, but also aerosols and dust that often carry radioactive nuclides, hazardous chemicals, and other harmful substances. Accurate and rapid nuclear radiation dose assessment, radioactive nuclide identification, and detection of hazardous chemicals and gas components are key technical aspects for fire and rescue teams to carry out on-site emergency response, ensure personnel safety, and make scientific decisions.

[0003] Currently, radionuclide identification instruments, thanks to high-resolution energy dispersive spectroscopy analysis, can rapidly identify multiple radionuclides even under complex matrix interference, while possessing low detection limits, meeting the detection requirements for nuclear radiation doses and radionuclides in aerosols and dust. Raman spectroscopy and Fourier transform infrared spectroscopy are commonly used techniques for detecting hazardous chemicals and gases, enabling the detection and identification of compounds through the "fingerprint" information of molecular spectra.

[0004] However, existing portable Raman spectroscopy equipment, Fourier transform infrared spectroscopy detection equipment, and radionuclide detection instruments have many shortcomings. Existing equipment lacks comprehensive and multifunctional detection capabilities, making it difficult to simultaneously analyze nuclear radiation dose, radionuclide types, hazardous chemicals, and gaseous components. Furthermore, the equipment lacks integration, is bulky, and requires multiple devices to operate in stages, failing to meet the needs of real-time synchronous on-site detection. The separation of sampling and detection also results in low detection efficiency, making it difficult to meet the urgent requirements for integrated, rapid, and efficient detection at special disaster and accident rescue sites such as nuclear and radiation incidents, and hazardous chemical explosions and fires. Summary of the Invention

[0005] The purpose of this invention is to provide a portable on-site nuclear and chemical detection device that is simple in structure, easy to operate, and easy to carry.

[0006] The portable on-site nuclear and chemical detection integrated device provided by this utility model includes a nuclear radiation and chemical comprehensive detection module, an infrared spectroscopy gas analysis module, an environmental sample detection tube, a display screen, a vacuum pump, a main control board, and a battery;

[0007] The environmental sample detection tube is a transparent tube that passes sequentially through the nuclear radiation and chemical comprehensive detection module and the infrared spectroscopy gas analysis module. One end of the environmental sample detection tube serves as an air inlet, and the other end is connected to a vacuum pump.

[0008] The integrated nuclear radiation and chemical detection module includes a Raman spectroscopy detection module and a nuclear radiation detection module. The detection laser emission end of the Raman spectroscopy detection module is pointed towards the environmental sample detection tube, while the sensor of the nuclear radiation detection module is close to the environmental sample detection tube.

[0009] The infrared light energy of the infrared spectroscopy gas analysis module irradiates through the environmental sample detection tube;

[0010] The environmental sample detection tube is located in the first section of the nuclear radiation and chemical comprehensive detection module and is filled with a filler that allows gas to pass through and adsorbs pollutants in the gas, such as aerosols, dust, and particles. The first section of the infrared spectroscopy gas analysis module is not filled with a filler.

[0011] The main control board is connected to the integrated nuclear radiation and chemical detection module, the infrared spectroscopy gas analysis module, the display screen, the air pump, and the battery. The battery powers the entire detection device. The integrated nuclear radiation and chemical detection module and the infrared spectroscopy gas analysis module can display the collected data on the display screen via the main control board.

[0012] In this invention, the environmental sample detection tube is located on a section of the infrared spectroscopy gas analysis module and is equipped with a heating wire. The heating wire is positioned to avoid the irradiation path of the infrared light from the infrared spectroscopy gas analysis module and is connected to the main control board.

[0013] In this invention, the cross-section of the environmental sample detection tube is rectangular, and the infrared light from the infrared spectroscopy gas analysis module irradiates through the environmental sample detection tube from the left and right sides. The heating wire is disposed on the top and / or bottom surface of the environmental sample detection tube.

[0014] In this invention, a gas treatment device is provided between the air inlet of the vacuum pump and the environmental sample detection tube to neutralize the gas after detection, preventing acidic or alkaline components in the gas from corroding the pump and pipeline. The gas treatment device includes two neutralization tanks connected in series: one neutralization tank contains alkaline substances such as calcium carbonate and sodium bicarbonate to neutralize acidic components in the gas; the other neutralization tank contains acidic substances such as sodium bisulfate and activated carbon impregnated with phosphoric acid to neutralize alkaline components in the gas. The neutralized harmless gas is then discharged by the vacuum pump.

[0015] In this utility model, the environmental sample detection tube is divided into two sections. The first section of the environmental sample detection tube is filled with a filling material. One end of the first section of the environmental sample detection tube is the air inlet and is equipped with a single-sided plug sealing cap with a vent hole in the center. The second section of the environmental sample detection tube is connected to the first section of the environmental sample detection tube through a double-sided plug sealing cap, which is also equipped with a vent hole in the center.

[0016] After a period of use, the first environmental sample detection tube, due to its filling material, is more easily and quickly contaminated and damaged, affecting the detection. Therefore, the first environmental sample detection tube, as a frequently replaced component, can be removed and replaced separately, while the second environmental sample detection tube is retained and can be replaced when necessary.

[0017] In this invention, the filler is glass frit or activated carbon, etc.

[0018] This utility model is used in nuclear, biological and chemical accidents where the on-site environment contains toxic and harmful gases, aerosols carrying dangerous chemicals and nuclear contamination, dust, particulate matter, etc. When personnel enter the site, it is necessary to detect and assess the current environmental gases so that on-site personnel can promptly grasp the degree of environmental pollution and take timely countermeasures.

[0019] The air pump is activated, and ambient gas is drawn in through the inlet of the environmental sample detection tube. The front section of the environmental sample detection tube is filled with glass frit or activated carbon to adsorb, filter, and enrich aerosols, dust, particles, and other minute substances in the ambient gas. In the integrated nuclear radiation and chemical detection module, the Raman spectroscopy detection module detects solid chemical substances attached to aerosols, dust, particles, and other minute substances, while the nuclear radiation detection module detects nuclear radiation from aerosols, dust, and particles. The second detection tube is hollow and without any filling material. The infrared spectroscopy gas analysis module is used to detect toxic and harmful gases in the environmental sample detection tube. A resistance wire heats and insulates the detection tube to prevent condensation of toxic and harmful gases in the environmental sample detection tube.

[0020] This invention has a simple structure and is easy to operate. It can quickly and effectively detect dangerous substances such as nuclear radiation, hazardous chemicals, and toxic and harmful gases in the environment of nuclear, biological and chemical accidents. Attached Figure Description

[0021] Figure 1 This is a structural diagram of the present invention.

[0022] Figure 2 This is a schematic diagram of the structure of an embodiment.

[0023] Figure 3 This is a side cross-sectional schematic diagram of the environmental sample detection tube in the example.

[0024] The diagram is labeled as follows: 1 is the integrated detection module for nuclear radiation and chemicals, 2 is the infrared spectroscopy gas analysis module, 3 is the environmental sample detection tube, 4 is the display screen, 5 is the air pump, 6 is the main control board, 7 is the battery, 8 is the housing, 9 is the single-sided plug sealing cap, 10 is the double-sided plug sealing cap, 11 is the heating wire, 12 is the filling material, and 13 is the gas processing device. Detailed Implementation

[0025] This utility model includes a nuclear radiation and chemical comprehensive detection module 1, an infrared spectroscopy gas analysis module 2, an environmental sample detection tube 3, a display screen 4, a vacuum pump 5, a main control board 6, and a battery 7; all of which are housed in a portable case 8.

[0026] The environmental sample detection tube 3 is a transparent tube and can be made of transparent materials such as KBr, ZnSe, and CaF2 that do not affect infrared irradiation. The environmental sample detection tube 3 passes through the nuclear radiation and chemical comprehensive detection module 1 and the infrared spectroscopy gas analysis module 2 in sequence. One end of the environmental sample detection tube 3 serves as the air inlet 9, and the other end is connected to the air pump 5.

[0027] The main control board 6 is connected to the nuclear radiation and chemical comprehensive detection module 1, the infrared spectroscopy gas analysis module 2, the display screen 4, the air pump 5, and the battery 7. The battery powers the entire detection device. The nuclear radiation and chemical comprehensive detection module 1 and the infrared spectroscopy gas analysis module 2 can display the collected data on the display screen via the main control board. The main control board 6 is also connected to the control panel, which controls the power supply and operation of each component through the control keys.

[0028] The integrated nuclear radiation and chemical detection module 1 detects the amount of nuclear radiation and chemical substances adsorbed and filtered in the tube. It includes a Raman spectroscopy detection module and a nuclear radiation detection module, both of which are connected to the main control board 6 via wiring. The environmental sample detection tube 3 is located between the Raman spectroscopy detection module and the nuclear radiation detection module. The Raman spectroscopy detection module's transmitter is facing the environmental sample detection tube 3, enabling it to analyze and identify the chemical substances in the environmental sample detection tube 3. The nuclear radiation detection module's sensor is close to the environmental sample detection tube 3, enabling it to detect the nuclear radiation in the environmental sample detection tube 3.

[0029] The infrared spectroscopy gas analysis module 2 detects the types of gases in the tube. Two reflectors are arranged opposite each other. The environmental sample detection tube 3 passes through the middle of the two reflectors. The infrared light emitting end faces one reflector. The infrared light can be reflected from one reflector to the other and form multiple reflections. That is, the infrared light can illuminate the environmental sample detection tube 3 multiple times, which can enhance the response of infrared light to gas detection signals.

[0030] The environmental sample detection tube 3 is divided into two sections connected front and back, and the tube body has a square cross-section.

[0031] The first environmental sample detection tube contains glass frit filler 12, which is connected to the integrated nuclear radiation and chemical detection module 1. One end of the first environmental sample detection tube is the air inlet, which passes through the side wall of the box 8 and is located outside the box 8. The air inlet is equipped with a single-sided plug seal 9 with a vent hole in the center. The second environmental sample detection tube is connected to the first environmental sample detection tube by a double-sided plug seal 10, which also has a vent hole in the center. The double-sided plug seal 10 can separate the filler 12. The environmental gas drawn in by the air pump 5 can pass through the hole. The seals are all made of silicone and can fit tightly to seal the environmental sample detection tube 3.

[0032] The second environmental sample detection tube is equipped with a heating wire 11 that passes through the infrared spectroscopy gas analysis module 2. The heating wire is connected to the main control board 6 and the heating is controlled by the main control board 6. The heating wire 11 is positioned to avoid the infrared light irradiation path in the infrared spectroscopy gas analysis module 1. The resistance wire heats and keeps the detection tube warm, which can prevent the condensation of toxic and harmful gases in the environment. The infrared light from the infrared spectroscopy gas analysis module 2 passes through the left and right sides of the second environmental sample detection tube, while the heating wire 11 is located on the top and / or bottom surface of the tube.

[0033] The exhaust port of the vacuum pump 5 is located on the housing 8. A gas treatment device 13 is also provided between the inlet pipe of the vacuum pump 5 and the front end and the environmental sample detection tube 3. This device is used to neutralize the gas after the test is completed, so as to prevent the acid and alkaline components in the gas from corroding the pump and pipeline. The gas treatment device 13 includes two neutralization tanks connected in series: one neutralization tank contains alkaline substances such as calcium carbonate and sodium bicarbonate to neutralize the acidic components in the gas; the other neutralization tank contains activated carbon impregnated with sodium bisulfate and phosphoric acid. The neutralized harmless gas is then discharged by the vacuum pump 5.

[0034] This invention is used in nuclear, biological and chemical accidents where the on-site environment is filled with aerosols and dust containing chemical substances and nuclear contamination. When personnel enter the site, it is necessary to detect and assess the current ambient gases to alert on-site personnel to the degree of contamination and take timely countermeasures.

[0035] In use, this invention involves starting the air pump, drawing in ambient gas through the inlet of the first environmental sample detection tube. This tube is filled with a glass frit core, which adsorbs, filters, and enriches aerosols, dust, particles, and other minute substances from the ambient gas. The integrated nuclear radiation and chemical detection module includes a Raman spectroscopy detection module and a nuclear radiation detection module. The nuclear radiation detection module identifies the types of nuclides and the radiation dose of the adsorbed and filtered substances in the environmental sample detection tube, while the Raman spectroscopy detection module detects the chemical composition of the adsorbed and filtered substances. The filtered gas then enters the second environmental sample detection tube, which is empty of filler material. The infrared spectroscopy gas analysis module then begins detecting toxic and harmful gases. A resistance wire heats and insulates the detection tube to prevent condensation of toxic and harmful gases. The integrated nuclear radiation and chemical detection module and the infrared spectroscopy gas analysis module transmit the obtained data to the display screen via a control board.

[0036] After a period of use, the first environmental sample detection tube, due to its filling material, is more easily and quickly contaminated and damaged, affecting the detection. Therefore, the first environmental sample detection tube, as a frequently replaced component, can be removed and replaced separately, while the second environmental sample detection tube is retained to control usage costs. The second environmental sample detection tube can be replaced only when necessary.

[0037] This invention has a simple structure and is easy to operate, enabling rapid and effective detection of nuclear radiation levels and harmful components in ambient gases in nuclear, biological, and chemical accident environments.

[0038] Although the above methods are illustrated and described as a series of structures for the sake of simplicity, it should be understood and appreciated that these methods are not specifically limited, as some structures may occur in different orders and / or concurrently with other actions from those illustrated and described herein or not illustrated and described herein but which may be understood by those skilled in the art, according to one or more embodiments.

[0039] The prior description of this disclosure is provided to enable any person skilled in the art to make or use this disclosure. Various modifications to this disclosure will be apparent to those skilled in the art, and the general principles defined herein may be applied to other variations without departing from the spirit or scope of this disclosure. Therefore, this disclosure is not intended to be limited to the examples and designs described herein, but should be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A portable detection device for use at nuclear and chemical accident fire and rescue sites, characterized in that, It includes a nuclear radiation and chemical comprehensive detection module, an infrared spectroscopy gas analysis module, an environmental sample detection tube, a display screen, a vacuum pump, a main control board, and a battery; The environmental sample detection tube is a transparent tube that passes sequentially through the nuclear radiation and chemical comprehensive detection module and the infrared spectroscopy gas analysis module. One end of the environmental sample detection tube serves as an air inlet, and the other end is connected to a vacuum pump. The integrated nuclear radiation and chemical detection module includes a Raman spectroscopy detection module and a nuclear radiation detection module. The detection laser emission end of the Raman spectroscopy detection module is pointed towards the environmental sample detection tube, while the sensor of the nuclear radiation detection module is close to the environmental sample detection tube. The infrared light energy of the infrared spectroscopy gas analysis module irradiates through the environmental sample detection tube; The environmental sample detection tube is filled with a filling material that allows gas to pass through and adsorbs pollutants in the gas in one section of the nuclear radiation and chemical integrated detection module, and is not filled in one section of the infrared spectroscopy gas analysis module. The main control board is connected to the nuclear radiation and chemical comprehensive detection module, the infrared spectroscopy gas analysis module, the display screen, the air pump and the battery, and the battery powers the entire detection device. The integrated nuclear radiation and chemical detection module and the infrared spectroscopy gas analysis module can display the collected data on the main control board via a screen.

2. The portable detection equipment as described in claim 1, characterized in that, The environmental sample detection tube is located on one section of the infrared spectroscopy gas analysis module and is equipped with a heating wire. The heating wire is positioned to avoid the irradiation path of infrared light in the infrared spectroscopy gas analysis module and is connected to the main control board.

3. The portable detection equipment as described in claim 2, characterized in that, The environmental sample detection tube has a rectangular cross-section. Infrared light from the infrared spectroscopy gas analysis module irradiates through the environmental sample detection tube from its left and right sides. The heating wire is located on the top and / or bottom surface of the environmental sample detection tube.

4. The portable detection equipment as described in claim 3, characterized in that, A gas treatment device is also provided between the air inlet of the vacuum pump and the environmental sample detection tube to neutralize the gas after detection, preventing acidic and alkaline components in the gas from corroding the pump and pipeline. The gas treatment device includes two neutralization tanks connected in series: one neutralization tank contains calcium carbonate and sodium bicarbonate to neutralize the acidic components in the gas; the other neutralization tank contains sodium bisulfate and activated carbon impregnated with phosphoric acid to neutralize the alkaline components in the gas. The neutralized harmless gas is then discharged by the vacuum pump.

5. The portable detection equipment as described in any one of claims 1 to 4, characterized in that, The environmental sample detection tube is divided into two sections. The first section of the environmental sample detection tube is filled with a filling material. One end of the first section of the environmental sample detection tube is the air inlet, which is equipped with a single-sided plug seal cap with a vent hole in the center of the cap. The second section of the environmental sample detection tube is connected to the first section of the environmental sample detection tube through a double-sided plug seal cap, which also has a vent hole in the center of the cap.

6. The portable detection equipment as described in claim 5, characterized in that, The filler is glass frit or activated carbon.

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