Portable detection equipment for nuclear accident fire rescue site

Abstract

The invention belongs to the technical field of fire rescue detection, and particularly relates to portable detection equipment for a nuclear accident fire rescue site. Comprising a nuclear radiation and chemical comprehensive detection module, an infrared spectroscopic analysis device, a field sample detection tube, a display screen, an air pump, a main control board and a battery, the field sample detection tube is a transparent tube and sequentially penetrates through the comprehensive detection module and the infrared spectroscopic analysis device, a port at one end of the field sample detection tube serves as an air inlet, and a port at the other end of the field sample detection tube is in butt joint with the sucking pump; the nuclear radiation and chemical comprehensive detection module can detect nuclear radiation and chemical components in the corresponding field sample detection tube; the infrared spectroscopic analysis device is used for detecting the gas type in the corresponding pipe; and the main control board is connected with the nuclear radiation and chemical comprehensive detection module, the infrared spectroscopic analysis device, the display screen, the sucking pump and the battery. The device is simple in structure and convenient to operate, and can quickly and effectively detect nuclear radiation, dangerous chemicals and toxic and harmful gases in the air of the nuclear biochemical accident site.

Description

Technical Field

[0001] The present invention belongs to the technical field of fire rescue detection, and in particular relates to a portable detection equipment used in nuclear accident fire rescue scenes. Background Art

[0002] In special disaster emergency rescue scenarios such as nuclear and radiation accidents, hazardous chemical leaks, 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 hazardous chemical and gas composition detection are key technical links for fire rescue teams to carry out on-site emergency response, ensure personnel safety, and make scientific decisions.

[0003] Currently, radionuclide identification instruments, leveraging high-resolution energy spectrum analysis, can rapidly identify multiple radionuclides despite complex matrix interferences. They also offer low detection limits, meeting the needs of detecting 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 identification of compounds through the "fingerprint" information of molecular spectra.

[0004] However, existing portable Raman spectroscopy equipment, Fourier transform infrared spectroscopy equipment, and radionuclide detection instruments have numerous shortcomings. Existing equipment lacks comprehensive and multifunctional detection capabilities, making it difficult to simultaneously analyze nuclear radiation dose, radionuclide type, hazardous chemicals, and gas composition. Furthermore, the equipment is insufficiently integrated, bulky, and requires multiple devices for step-by-step operation, failing to meet the demands of on-site real-time simultaneous detection. Furthermore, the separation of sampling and detection results in low detection efficiency, making it difficult to meet the urgent demand for integrated, coordinated, rapid, and efficient detection at fire and rescue sites for special disasters such as nuclear and radiation accidents and hazardous chemical explosions and combustion. Summary of the Invention

[0005] The purpose of the present invention is to provide a portable on-site nuclear and chemical detection integrated device with a simple structure, convenient operation and portability.

[0006] The portable on-site nuclear and chemical detection integrated device provided by the present invention includes a nuclear radiation and chemical integrated detection module, an infrared spectrum gas analysis module, an environmental sample detection tube, a display screen, an air pump, a main control board and a battery; The environmental sample detection tube is a transparent tube that passes through the nuclear radiation and chemical comprehensive detection module and the infrared spectrum gas analysis module in sequence. One end of the environmental sample detection tube serves as an air inlet, and the other end is connected to the air pump. The nuclear radiation and chemical integrated detection module includes a Raman spectrum detection module and a nuclear radiation detection module. The detection laser emission end of the Raman spectrum detection module faces the environmental sample detection tube, and the sensor of the nuclear radiation detection module is close to the environmental sample detection tube. The infrared light of the infrared spectrum gas analysis module can irradiate through the environmental sample detection tube; 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 can pass gas and adsorb pollutants in the gas, such as aerosols, dust, particles, etc., and is located in the first section of the infrared spectrum gas analysis module without a filler; The main control board is connected to the nuclear radiation and chemical comprehensive detection module, the infrared spectrum gas analysis module, the display screen, the air pump and the battery, and the battery provides power for the entire detection device; the nuclear radiation and chemical comprehensive detection module and the infrared spectrum gas analysis module can display the collected data on the display screen through the main control board.

[0007] In the present invention, the environmental sample detection tube is located on a section of the infrared spectrum gas analysis module tube body and is provided with a heating wire. The location of the heating wire avoids the irradiation path of the infrared light of the infrared spectrum gas analysis module and the heating wire is connected to the main control board.

[0008] In the present invention, the cross-section of the environmental sample detection tube is rectangular, the infrared light of the infrared spectroscopy gas analysis module irradiates and passes through the environmental sample detection tube from the left and right sides of the environmental sample detection tube, and the heating wire is arranged on the top and / or bottom surface of the environmental sample detection tube.

[0009] In the present invention, a gas treatment device is further provided between the air inlet of the vacuum pump and the environmental sample detection tube, which is used to neutralize the gas after detection to prevent the 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 is filled with alkaline substances such as calcium carbonate and sodium bicarbonate to neutralize the acidic components in the gas; the other neutralization tank is filled with acidic substances such as 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.

[0010] In the present invention, the environmental sample detection tube is divided into two sections. The first section of the environmental sample detection tube is provided with a filler. One end of the first section of the environmental sample detection tube is an air inlet and is provided with a single-sided plug sealing cover with a ventilation hole in the center of the cover. 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 cover, and the center of the cover is also provided with a ventilation hole. After using for a period of time, the first section of the environmental sample detection tube is more likely to be contaminated and damaged quickly due to the filler, which affects the detection. Therefore, the first section of the environmental sample detection tube is a frequently replaced component and can be removed and replaced separately, while the second section of the environmental sample detection tube is retained and can be replaced when necessary.

[0011] In the present invention, the filler is glass sand core or activated carbon.

[0012] The present invention is used in nuclear, biological and chemical accidents. When personnel enter the scene, there are toxic and harmful gases, aerosols carrying dangerous chemicals and nuclear pollution, dust, particulate matter, etc. in the scene environment. It is necessary to detect and evaluate the current environmental gas so that the on-site personnel can timely understand the degree of environmental pollution and take timely response measures. Start the vacuum pump, and the gas in the environment is sucked into the air inlet of the environmental sample detection tube. The front section of the environmental sample detection tube is filled with glass sand core or activated carbon, etc., which is used to adsorb, filter and enrich aerosols, dust, particles and other tiny substances in the environmental gas; in the nuclear radiation and chemical comprehensive detection module, the Raman spectrum detection module detects solid chemical substances attached to aerosols, dust, particles and other tiny substances, and the nuclear radiation detection module detects the nuclear radiation of aerosols, dust and particles; the second section of the detection pipeline is hollow and has no filler, and the infrared spectrum gas analysis module is used to detect toxic and harmful gases in the environmental sample detection tube. The resistance wire heats and insulates the detection pipeline to avoid condensation of toxic and harmful gases in the environmental sample detection tube.

[0013] The present invention has a simple structure and is easy to operate, and can quickly and effectively detect dangerous substances such as nuclear radiation, dangerous chemicals, toxic and harmful gases in nuclear, biological and chemical accident environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural diagram of the present invention.

[0015] Figure 2 Schematic diagram of the structure of the embodiment.

[0016] Figure 3 Schematic diagram of the side cross-section structure of the environmental sample detection tube in the embodiment.

[0017] The numbers in the figure are: 1 is the nuclear radiation and chemical integrated detection module, 2 is the infrared spectrum gas analysis module, 3 is the environmental sample detection tube, 4 is the display screen, 5 is the vacuum pump, 6 is the main control board, 7 is the battery, 8 is the box body, 9 is the single-sided plug sealing cover, 10 is the double-sided plug sealing cover, 11 is the heating wire, 12 is the filler, and 13 is the gas treatment device. DETAILED DESCRIPTION

[0018] The present invention comprises a nuclear radiation and chemical comprehensive detection module 1, an infrared spectrum gas analysis module 2, an environmental sample detection tube 3, a display screen 4, an air pump 5, a main control board 6 and a battery 7; all of which are arranged in a portable box 8.

[0019] The environmental sample detection tube 3 is a transparent tube and can be made of transparent materials such as KBr, ZnSe, CaF2 that do not affect infrared radiation. The environmental sample detection tube 3 passes through the nuclear radiation and chemical comprehensive detection module 1 and the infrared spectrum gas analysis module 2 in sequence. One end of the environmental sample detection tube 3 serves as an air inlet 9, and the other end is connected to the air pump 5. The main control board 6 is connected to the nuclear radiation and chemical comprehensive detection module 1, the infrared spectrum gas analysis module 2, the display screen 4, the air pump 5 and the battery 7, and the battery provides power for the entire detection device; the nuclear radiation and chemical comprehensive detection module 1 and the infrared spectrum gas analysis module 2 can display the collected data on the display screen through the main control board; the main control board 6 is also connected to the control panel, and the power supply and operation of each component are controlled by control keys.

[0020] The nuclear radiation and chemical integrated detection module 1 detects the amount of nuclear radiation and chemical substances adsorbed and filtered in the detection tube, and includes a Raman spectrum detection module and a nuclear radiation detection module, both of which are connected to the main control board 6 via lines. The environmental sample detection tube 3 is located between the Raman spectrum detection module and the nuclear radiation detection module; the transmitting end of the Raman spectrum detection module faces the environmental sample detection tube 3 and can analyze and identify the chemical substances in the environmental sample detection tube 3; the sensor of the nuclear radiation detection module is close to the environmental sample detection tube 3 and can detect the three types of nuclear radiation in the environmental sample detection tube 3.

[0021] The infrared spectroscopy gas analysis module 2 detects the type of gas in the tube. Two reflectors are arranged opposite to each other, and 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 irradiate the environmental sample detection tube 3 multiple times, which can enhance the infrared light response to the gas detection signal. The environmental sample detection tube 3 is divided into two sections connected front and back, and the cross section of the tube body is square; The first section of the environmental sample detection tube is provided with a glass sand core filler 12, which is correspondingly provided through the nuclear radiation and chemical integrated detection module 1. One end of the first section of the environmental sample detection tube is the air inlet, which passes through the side wall of the box body 8 and is located outside the box body 8. The air inlet is provided with a single-sided plug sealing cover 9, and a ventilation hole is provided in the center of the cover; the second section of the environmental sample detection tube and the first section of the environmental sample detection tube are connected through a double-sided plug sealing cover 10, and a ventilation hole is also provided in the center of the cover. The double-sided plug sealing cover 10 can separate the filler 12; the environmental gas sucked in by the vacuum pump 5 can pass through the hole; the sealing cover is made of silicone material, which can tightly seal the environmental sample detection tube 3; The second section of the environmental sample detection tube is correspondingly arranged to pass through the infrared spectroscopy gas analysis module 2, and is provided with a heating wire 11. The heating wire is connected to the main control board 6, and the heating is controlled by the main control board 6; the position of the heating wire 11 avoids the irradiation path of the infrared light in the infrared spectroscopy gas analysis module 1, and the resistance wire heats and insulates the detection pipeline to avoid condensation of toxic and harmful gases in the environment; the infrared light of the infrared spectroscopy gas analysis module 2 irradiates and passes through the left and right sides of the second section of the environmental sample detection tube, and the heating wire 11 is arranged on the top and / or bottom surfaces of the tube body.

[0022] The exhaust port of the vacuum pump 5 is arranged on the box body 8, and a gas treatment device 13 is also provided between the air inlet pipe and the front end of the vacuum pump 5 and the environmental sample detection tube 3, which is used to neutralize the gas after the detection is completed to prevent the acidic and alkaline components in the gas from corroding the pump and pipeline; the gas treatment device 13 includes two neutralization tanks in series: one neutralization tank is filled with alkaline substances such as calcium carbonate and sodium bicarbonate to neutralize the acidic components in the gas; the other neutralization tank is filled with activated carbon impregnated with sodium bisulfate and phosphoric acid; the neutralized harmless gas is then discharged by the vacuum pump 5.

[0023] The present invention is used in nuclear, biological and chemical accidents. The on-site environment is filled with aerosols and dust containing chemical substances and nuclear pollution. When personnel enter the scene, it is necessary to detect and evaluate the current environmental gas to remind on-site personnel of the pollution level and take timely countermeasures. When the present invention is used, the vacuum pump is activated, and ambient gas is drawn in through the air inlet of the first section of the environmental sample detection tube. The first section of the environmental sample detection tube is filled with a glass frit, which absorbs, filters, and enriches aerosols, dust, particles, and other microscopic substances in the ambient gas. The nuclear radiation and chemical comprehensive detection module includes a Raman spectroscopy detection module and a nuclear radiation detection module. The nuclear radiation detection module can identify the type of nuclides and nuclear radiation dose of the absorbed and filtered substances in the environmental sample detection tube, and the Raman spectroscopy detection module can detect the chemical composition of the absorbed and filtered substances in the environmental sample detection tube. The absorbed and filtered gas then enters the next section of the unfilled second section of the environmental sample detection tube. The infrared spectroscopy gas analysis module begins to detect toxic and harmful gases. The resistance wire heats and insulates the detection tube to prevent condensation of toxic and harmful gases in the detection tube. The nuclear radiation and chemical comprehensive detection module and the infrared spectroscopy gas analysis module transmit the obtained data information to the display screen via the control panel.

[0024] After using for a period of time, the first section of the environmental sample detection tube is more likely to be contaminated and damaged quickly due to the filler, which affects the detection. Therefore, the first section of the environmental sample detection tube is a frequently replaced component and can be removed and replaced separately. The second section of the environmental sample detection tube can be retained to control the use cost and replaced when necessary.

[0025] The invention has a simple structure and is easy to operate, and can quickly and effectively detect the amount of nuclear radiation and harmful components in environmental gases in a nuclear, biological and chemical accident environment.

[0026] Although the above methods are illustrated and described as a series of structures for simplicity of explanation, it should be understood and appreciated that these methods are not specifically limited because according to one or more embodiments, some structures can occur in different orders and / or concurrently with other actions from those illustrated and described herein or not illustrated and described herein but understandable to those skilled in the art.

[0027] The previous description of the disclosure is provided to enable any person skilled in the art to make or use the disclosure. Various modifications to the 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 the disclosure. Thus, the disclosure is not intended to be limited to the examples and designs described herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A portable detection equipment for use at nuclear accident fire rescue sites, characterized in that: It includes nuclear radiation and chemical comprehensive detection module, infrared spectrum gas analysis module, environmental sample detection tube, display screen, vacuum pump, main control board and battery; The environmental sample detection tube is a transparent tube that passes through the nuclear radiation and chemical comprehensive detection module and the infrared spectrum gas analysis module in sequence. One end of the environmental sample detection tube serves as an air inlet, and the other end is connected to the air pump. The nuclear radiation and chemical integrated detection module includes a Raman spectrum detection module and a nuclear radiation detection module. The detection laser emission end of the Raman spectrum detection module faces the environmental sample detection tube, and the sensor of the nuclear radiation detection module is close to the environmental sample detection tube. The infrared light of the infrared spectrum gas analysis module can irradiate through the environmental sample detection tube; 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 can pass gas and adsorb pollutants in the gas, and is located in the first section of the infrared spectrum gas analysis module and is not filled; The main control board is connected to the nuclear radiation and chemical integrated detection module, the infrared spectrum gas analysis module, the display screen, the air pump and the battery, and the battery provides power for the entire detection device; The nuclear radiation and chemical comprehensive detection module and the infrared spectrum gas analysis module can display the collected data on the display screen through the main control board.

2. The portable detection equipment according to claim 1, characterized in that: The environmental sample detection tube is located on a section of the infrared spectrum gas analysis module tube body and is provided with a heating wire. The location of the heating wire avoids the irradiation path of the infrared light in the infrared spectrum gas analysis module and the heating wire is connected to the main control board.

3. The portable detection equipment according to claim 2, characterized in that: The cross-section of the environmental sample detection tube is rectangular, the infrared light of the infrared spectrum gas analysis module irradiates and passes through the environmental sample detection tube from the left and right sides, and the heating wire is arranged on the top and / or bottom surface of the environmental sample detection tube.

4. The portable detection equipment according to 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, which is used to neutralize the gas after the detection is completed to prevent the 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 is filled with calcium carbonate and sodium bicarbonate to neutralize the acidic components in the gas; the other neutralization tank is filled with activated carbon impregnated with sodium bisulfate and 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 according to 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 equipped with a filler. One end of the first section of the environmental sample detection tube is the air inlet, and is provided with a single-sided plug sealing cover, and a ventilation hole is provided in the center of the cover; the second section of the environmental sample detection tube and the first section of the environmental sample detection tube are connected through a double-sided plug sealing cover, and a ventilation hole is also provided in the center of the cover.

6. The portable detection equipment according to claim 5, characterized in that: The filler is glass sand core or activated carbon.

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