Handheld nuclear radiation and chemical substance triple detector

Abstract

The utility model belongs to the technical field of nuclear radiation and toxic and harmful substance detection, and particularly relates to a handheld nuclear radiation and chemical substance triple detector. Comprising a control mainboard, a Raman spectrum detection module, a nuclide identification and radiation dose detection module, a spectrum detection probe, a touch control screen, a built-in battery and a shell, the control mainboard, the Raman spectrum detection module, the nuclide identification and radiation dose detection module and the built-in battery are arranged in the main shell; the Raman spectrum detection module, the nuclide identification and radiation dose detection module and the built-in battery are connected with the control mainboard; a light hole is formed in the top end of the main shell and corresponds to a Raman laser emission hole in the Raman spectrum detection module, and a detachable spectrum detection probe is arranged on the outer side of the light hole; the touch control screen is arranged on the front face of the main shell and connected with the control mainboard. The device is simple in structure and convenient to carry, has triple functions of Raman spectrum detection, nuclide type identification, radiation dose detection and the like, and is operated in a handheld manner on site, so that the operation is convenient and rapid.

Description

Technical Field

[0001] The utility model belongs to the technical field of nuclear radiation and toxic and harmful substance detection, and particularly relates to a handheld triple detector for nuclear radiation and chemical substances. Background Art

[0002] Currently, there are a large number of units that produce, sell, and use radioactive isotopes and radiation devices, including a considerable number of units and sites related to chemical production, operation, etc. For example, 60 Co, 137 Nuclear radiation sources such as Cs have the advantages of strong penetrability and non-contact continuous testing as level gauges, and are particularly suitable for measuring substances in containers such as high-pressure, high-temperature, corrosive, and toxic substances. They have been widely used in industries such as hazardous chemical production, petrochemical, and chemical fertilizers.

[0003] Detecting the fire and explosion accidents, chemical accidents, nuclear accidents, and other disaster scenes of these units and sites is an important part of fire rescue work. Conducting rapid and effective detection at the fire rescue scene, and at the same time identifying and analyzing chemical substances, and differentiating and detecting the types of environmental radionuclides and radiation doses will greatly contribute to the scientific development of fire rescue and emergency response work, and also help to ensure the life safety and physical health of fire rescue personnel.

[0004] However, it is difficult for a single detection method and instrument equipment to comprehensively and effectively detect and analyze substances and the environment at the fire scene. Raman spectroscopy technology has the advantages of short analysis time, strong discrimination ability, and convenient use. It can accurately qualitatively analyze solid and liquid samples in a very short time and has been widely used in various on-site detection work. It is a powerful and relatively ideal technical means for the rapid detection of chemical substances at the fire rescue scene. Raman spectroscopy technology can detect and analyze chemical substances, but it cannot clarify the types of radionuclides and radiation doses in the environment. Existing related nuclear radiation detection equipment can detect the types of radionuclides and radiation doses, but cannot detect chemical substances at the fire scene. Therefore, currently, a single Raman spectrometer or nuclear and nuclear radiation detector and other related instrument equipment cannot comprehensively and effectively detect chemical substances, environmental radionuclides, and radiation doses at the fire scene, and cannot meet the needs of fire scene detection work for nuclear-related hazardous chemical accidents. Summary of the Invention

[0005] The purpose of the utility model is to provide a handheld triple detector for nuclear radiation and chemical substances with simple operation and convenient carrying.

[0006] The handheld triple detector for nuclear radiation and chemical substances provided by the utility model includes a control main board, a Raman spectroscopy detection module, a radionuclide identification and radiation dose detection module, a spectral detection probe, a touch control screen, an internal battery, and a housing;

[0007] The housing includes a main housing and a back housing. The back of the main housing is open, and the back housing covers the opening position.

[0008] The control main board, the Raman spectroscopy detection module, and the built-in battery are arranged in the main housing; the Raman spectroscopy detection module and the built-in battery are connected to the control main board.

[0009] A hollow convex part is provided on the back housing, and the nuclide identification and radiation dose detection module is arranged in the convex part; the nuclide identification and radiation dose detection module is connected to the control main board.

[0010] A light-transmitting hole is provided at the top end of the main housing, and a Raman laser emission hole is provided on the Raman spectroscopy detection module. The Raman laser emission hole is closely arranged inside the light-transmitting hole; a detachable spectral detection probe is provided outside the light-transmitting hole.

[0011] A control button is also provided on the main housing and is connected to the control main board.

[0012] The touch control screen is arranged on the front of the main housing and is connected to the control main board; the Raman spectroscopy detection, nuclide identification, and radiation dose detection can be controlled through the touch control screen.

[0013] In the present utility model, magnetic attraction rings are provided at the positions corresponding to the light-transmitting hole of the main housing and on the spectral detection probe. The main housing and the spectral detection probe are detachably connected by magnetic attraction, and the spectral detection probe can directly detect the sample.

[0014] In the present utility model, a sample-insertion type spectral detection chamber is further provided. The top surface of the chamber body is provided with an opening to form a placement cavity for placing a transparent sample bottle; a magnetic attraction ring is provided on the side surface of the chamber body for detachable connection with the main housing, and a light-transmitting hole is provided on this surface or it is made of a transparent material for the Raman laser to pass through and irradiate into the chamber body.

[0015] A slot is further provided at the opening of the top surface of the chamber body for inserting a thin-film surface-enhanced Raman detection device, so that the sample surface of the surface-enhanced Raman detection device faces the light-transmitting hole.

[0016] The Raman laser emitted by the Raman spectroscopy detection module irradiates the sample in the sample bottle or on the sample on the enhancement substrate of the surface-enhanced Raman detection device.

[0017] When the present utility model is in use, for an accident scene, the device can be started first through the control button. The functions of nuclide identification and radiation dose detection can be selected through the screen. The nuclide identification and radiation dose detection modules are started through the control main board to identify the types of nuclides and detect the radiation dose in the on-site environment. The detection information of nuclide identification and radiation dose detection is processed by the control main board, and then the detection results are displayed on the screen. For on-site chemical samples, switch to the Raman spectroscopy detection mode. The spectroscopic detection probe at the end of the device can be directly aimed at the object to be measured. The Raman laser emitted by the Raman spectroscopy detection module irradiates the object to be measured, and the collected spectral information is processed by the control main board, and then the detection and analysis results are displayed on the screen.

[0018] For solid and liquid samples that can be directly extracted, such as residues of chemicals and their soil, liquid substances, etc., directly remove the spectroscopic detection probe and replace it with a sample-insertion type spectroscopic detection chamber. Put the residues of chemicals and their soil into a transparent sample bottle, and then put the transparent sample bottle into the opening of the sample-insertion type spectroscopic detection chamber. The Raman laser emitted by the Raman spectroscopy detection module directly irradiates the transparent sample bottle through the light-transmitting hole or transparent surface for sample detection. The collected spectral information is processed by the control main board, and then the detection and analysis results are displayed on the screen. Or, for low-concentration liquid samples, such as solution samples with relatively low concentrations of chemical substances after extraction of chemical substances in soil and other matrices with organic solvents, directly remove the spectroscopic detection probe and replace it with a sample-insertion type spectroscopic detection chamber. Drop the low-concentration solution sample on the enhancement substrate of the flaky surface-enhanced Raman detection device so that the surface of the enhancement substrate contains the sample compound to be measured. Then insert the surface-enhanced Raman detection device into the slot of the sample-insertion type spectroscopic detection chamber. The Raman laser emitted by the Raman spectroscopy detection module directly irradiates the enhancement substrate through the light-transmitting hole or transparent surface for sample detection. The collected spectral information is processed by the control main board, and then the detection and analysis results are displayed on the screen.

[0019] The present utility model has a simple structure and is easy to carry. It has three functions: Raman spectroscopy detection, nuclide identification, and radiation detection. It can be operated handheld on-site and can provide fast and reliable technical support for the on-site detection work in the fire rescue of nuclear-related hazardous chemical accidents. Description of the Drawings

[0020] Figure 1 It is an overall illustration of the present utility model.

[0021] Figure 2 It is an exploded structure illustration of the present utility model.

[0022] Figure 3 It is a schematic diagram of the sample-insertion type spectroscopic detection chamber of the present utility model.

[0023] Reference numerals in the figure: 1 is the control main board, 2 is the Raman spectroscopy detection module, 3 is the spectroscopy detection probe, 4 is the nuclide identification and radiation dose detection module, 5 is the built-in battery, 6 is the touch control screen, 7 is the main case, 8 is the back case, 9 is the sample insertion type spectroscopy detection chamber, 10 is the convex portion, 11 is the light transmission hole, 12 is the Raman laser emission hole, 13 is the cylindrical storage inner cavity, 14 is the long strip-shaped slot. Detailed implementation mode

[0024] The utility model includes a control main board 1, a Raman spectroscopy detection module 2, a spectroscopy detection probe 3, a nuclide identification and radiation dose detection module 4, a built-in battery 5, a touch control screen 6 and a housing 7;

[0025] The housing is made of plastic material and is integrally rectangular, including a main case 7 and a back case 8. The back of the main case 7 is open, and there is a retaining piece in the form of a structure at the front position for supporting and fixing each component inside the case. The back case 8 is covered at the position of the back opening;

[0026] The control main board 1, the Raman spectroscopy detection module 2 and the built-in battery 5 are arranged in the main case 7; the Raman spectroscopy detection module 2 and the built-in battery 5 are connected to the control main board 1 through circuits;

[0027] A hollow convex portion 10 is provided on the back case 8, and the nuclide identification and radiation dose detection module 4 is arranged in the convex portion 10, so that the nuclide identification and radiation dose detection module 4 and the Raman spectroscopy detection module 2 are separated in two working areas; the nuclide identification and radiation dose detection module 4 is connected to the control main board 1 through a flexible cable;

[0028] A light transmission hole 11 is provided at the top of the main case 7, and a Raman laser emission hole 12 is provided on the Raman spectroscopy detection module 2. The Raman laser emission hole 12 is closely arranged inside the light transmission hole 11; a detachable spectroscopy detection probe 3 is provided outside the light transmission hole 11; magnetic attraction rings are provided at the position of the light transmission hole 11 of the main case 7 and at the corresponding position on the spectroscopy detection probe 3. The main case 7 and the spectroscopy detection probe 3 are detachably connected by magnetic attraction. The spectroscopy detection probe 3 can directly contact the sample for detection. The length of the spectroscopy detection probe 3 matches the Raman laser focus point for more accurate spectroscopy testing;

[0029] The magnetic attraction ring can adopt an annular magnet or magnetic strips arranged in a ring at the position of the light transmission hole 11, and a metal strip is provided at the position where the spectroscopy detection probe 3 is inserted; concave card slots are provided at the positions of the spectroscopy detection probe 3 and the light transmission hole 11 of the main case for the magnetic attraction ring and the metal strip to be embedded and fixed;

[0030] An inward concave structure is provided in the area around the light transmission hole 11 of the main case 7, and a convex structure is provided on the docking surface of the corresponding spectroscopy detection probe 3 to facilitate the adsorption and installation positioning of the spectroscopy detection probe 3;

[0031] A number of control buttons are also provided on the side of the main housing 7, which are connected to the control main board 1 through circuits and can control and select Raman spectroscopy detection, nuclide identification, radiation detection, power on and off, etc.;

[0032] The touch control screen 6 is arranged on the front of the main housing 7 and fixed on the baffle. The touch control screen 6 is connected to the control main board 1 through a circuit; through the touch control screen 6, control such as Raman spectroscopy detection, nuclide identification, radiation dose detection, etc. and setting of test parameters can be carried out.

[0033] In addition, a sample insertion type spectroscopic detection chamber 9 is provided. The chamber body is a cube, and its top surface is provided with an opening, which is a circular opening, and a cylindrical placement inner cavity 13 is formed in the chamber body for a transparent sample bottle to be inserted; one side of the chamber body is docked with the main housing 1, and this side is provided with a magnetic attraction ring and a convex structure for positioning, which is used for detachable magnetic attraction and positioning connection with the main housing 1; and this side is provided with a through hole for Raman laser to pass through and irradiate into the chamber body; or: this surface is provided with an opening, and the convex structure is a transparent block, which is embedded and fixed in the opening for Raman laser to pass through the transparent block and irradiate into the chamber body;

[0034] Long strip-shaped slots 14 are correspondingly provided on the left and right sides of the side wall of the cylindrical inner cavity 13 of the chamber body, and a thin-film surface-enhanced Raman detection device can be inserted, so that the sample surface of the surface-enhanced Raman detection device faces the light-transmitting hole 11; the Raman laser emitted by the Raman spectroscopy detection module 2 irradiates the sample in the sample bottle or on the enhanced substrate of the surface-enhanced Raman detection device.

[0035] The nuclide identification and radiation dose detection module 4 is an integrated component of an existing nuclide identification module and a radiation dose detection module, or an existing direct dual-function integrated module.

[0036] When the utility model is used, for an accident scene, the device can be started first through the control button, the functions of nuclide identification and radiation dose detection can be selected through the screen, the nuclide identification and radiation dose detection module can be started through the control main board, the types of nuclides in the on-site environment can be identified and the radiation dose can be detected, the detection information of nuclide identification and radiation dose detection is processed through the control main board, and then the detection results are displayed on the screen; for on-site chemical samples, switch to the Raman spectroscopy detection mode, the spectroscopic detection probe at the end of the device can be directly aimed at the object to be measured, the Raman laser emitted by the Raman spectroscopy detection module irradiates the object to be measured, the collected spectral information is processed through the control main board, and then the detection and analysis results are displayed on the screen;

[0037] For solid and liquid samples that can be directly extracted, such as chemical residues in chemicals and soil, liquid substances, etc., directly remove the spectroscopic detection probe and replace it with a sample-insertion type spectroscopic detection chamber. Place the chemical residues in chemicals and soil, etc. into a transparent sample bottle, and then place the transparent sample bottle into the opening of the sample-insertion type spectroscopic detection chamber. The Raman laser emitted by the Raman spectroscopy detection module directly irradiates the transparent sample bottle through the light-transmitting hole or transparent surface for sample detection. The collected spectral information is processed by the control main board, and then the detection and analysis results are displayed on the screen. Or, for low-concentration liquid samples, such as solution samples with relatively low concentrations of chemical substances after extraction with organic solvents from chemical substances in matrices such as soil, directly remove the spectroscopic detection probe and replace it with a sample-insertion type spectroscopic detection chamber. Drop the low-concentration solution sample onto the enhancement substrate of the thin-film surface-enhanced Raman detection device so that the surface of the enhancement substrate contains the sample compound to be measured. Then insert the surface-enhanced Raman detection device into the slot of the sample-insertion type spectroscopic detection chamber. The Raman laser emitted by the Raman spectroscopy detection module directly irradiates the enhancement substrate through the light-transmitting hole or transparent surface for sample detection. The collected spectral information is processed by the control main board, and then the detection and analysis results are displayed on the screen.

[0038] The utility model has a simple structure and is easy to carry. It has three functions: Raman spectroscopy detection, nuclide identification, and radiation detection. It can be operated handheld on-site, providing fast and reliable technical support for the on-site detection work in the fire rescue of nuclear-related hazardous chemical accidents.

[0039] 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 limited thereto, because according to one or more embodiments, some structures may occur in a different order and / or concurrently with other actions that are illustrated and described herein or that are not illustrated and described herein but are understandable to those skilled in the art.

[0040] The foregoing description of the disclosure has been provided to enable any person skilled in the art to make or use the disclosure. Various modifications to the disclosure will be readily 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 handheld nuclear radiation and chemical substance triple detector, characterized in that: It includes a control mainboard, a Raman spectrum detection module, a nuclide identification and radiation dose detection module, a spectrum detection probe, a touch control screen, a built-in battery and a housing; The housing comprises a main housing and a back housing, the back of the main housing is open, and the back housing covers the opening; The control mainboard, Raman spectrum detection module and built-in battery are arranged in the main shell; The Raman spectrum detection module and the built-in battery are connected to the control main board; The back shell is provided with a hollow protrusion, and the nuclide identification and radiation dose detection module is arranged in the protrusion; the nuclide identification and radiation dose detection module is connected to the control main board; A light-transmitting hole is provided at the top of the main shell, a Raman laser emitting hole is provided on the Raman spectrum detection module, and the Raman laser emitting hole is closely arranged at the inner side of the light-transmitting hole; a detachable spectrum detection probe is provided on the outer side of the light-transmitting hole; The main shell is also provided with a control button connected to the control mainboard; The touch control screen is arranged on the front of the main shell, and the touch control screen is connected to the control main board; the Raman spectrum detection, nuclide identification and radiation dose detection can be controlled by the touch control screen.

2. The handheld nuclear radiation and chemical substance triple detector as claimed in claim 1, characterized in that: Magnetic rings are provided at the positions of the light-transmitting holes of the main shell and the corresponding ones on the spectrum detection probe. The main shell and the spectrum detection probe are detachably connected by magnetic attraction, and the spectrum detection probe can directly detect the sample.

3. The handheld nuclear radiation and chemical substance triple detector as claimed in claim 2, characterized in that: A sample-insertion-type spectrum detection chamber is also provided, and an opening is provided on the top surface of the chamber body to form a storage cavity for placing a transparent sample bottle; a magnetic suction ring is provided on the side of the chamber body for detachable connection with the main shell, and the surface is provided with a through hole or made of transparent material to allow Raman laser to pass through and irradiate into the chamber body; The opening on the top surface of the chamber body is also provided with a slot for inserting a sheet-like surface enhanced Raman detection device, so that the sample of the surface enhanced Raman detection device faces the light transmission hole.

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