Handheld nuclear radiation and chemical substance triple detector

Abstract

The invention 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, is operated by hand on site, and is convenient and rapid to operate.

Description

Technical Field

[0001] The invention belongs to the technical field of nuclear radiation and toxic and hazardous substance detection, and in particular relates to a handheld nuclear radiation and chemical substance triple detector. Background Art

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

[0003] An important part of fire rescue work is to detect and inspect the disaster sites of fire and explosion accidents, chemical accidents, nuclear accidents, etc. in these units and places. Carrying out rapid and effective detection at the fire rescue site, while identifying and analyzing chemical substances and identifying and detecting the types of environmental nuclides and radiation doses, will greatly help to carry out fire rescue and emergency response work in a scientific manner, and also help to protect the life safety and health of fire rescuers.

[0004] However, it is difficult for a single detection method and instrument to conduct comprehensive and effective detection and analysis of the materials and environment at the fire scene. Raman spectroscopy technology has the advantages of short analysis time, strong identification ability, and convenient use. It can accurately and qualitatively analyze solid and liquid samples in a very short time. It 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 site. Raman spectroscopy technology can detect and analyze chemical substances, but it cannot clearly determine the type of nuclides and radiation doses in the environment. The existing related nuclear radiation detection equipment can detect the type of nuclides and radiation doses, but cannot detect chemical substances at the fire scene. Therefore, the current single Raman spectrometer or nuclear and nuclear radiation detector and other related instruments and equipment cannot conduct comprehensive and effective detection of chemical substances at the fire scene, nuclides in the environment and radiation doses, and cannot meet the needs of fire scene detection work for nuclear hazardous chemical accidents. Summary of the invention

[0005] The purpose of the present invention is to provide a handheld nuclear radiation and chemical substance triple detector which is simple to operate and easy to carry.

[0006] The handheld nuclear radiation and chemical substance triple detector provided by the present invention comprises 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 mainboard; 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.

[0007] In the present invention, the light-transmitting hole of the main shell and the corresponding spectral detection probe are both provided with magnetic circles, and the main shell and the spectral detection probe are detachably connected by magnetic attraction, and the spectral detection probe can directly detect the sample.

[0008] In the present invention, a sample placement type spectral 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 a 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 thin sheet-shaped surface enhanced Raman detection device, so that the sample of the surface enhanced Raman detection device faces the light transmission hole; The Raman laser emitted from the Raman spectrum detection module is irradiated onto the sample in the sample bottle or onto the enhanced substrate of the surface enhanced Raman detection device.

[0009] When the present invention is used, for the accident scene, the device can be started by the control button first, the function of nuclide identification and radiation dose detection can be selected through the screen, the nuclide identification and radiation dose detection module can be started by the control mainboard, the nuclide type identification and radiation dose detection of the scene environment can be carried out, the detection information of the nuclide identification and radiation dose detection can be processed by the control mainboard, and then the detection result can be displayed on the screen; for the on-site chemical samples, the Raman spectrum detection mode can be switched to start, the spectrum detection probe at the end of the device can be directly aimed at the object to be tested, the Raman laser emitted by the Raman spectrum detection module can be irradiated on the object to be tested, the collected spectrum information can be processed by the control mainboard, and then the detection analysis result can be displayed on the screen; For solid and liquid samples that can be directly extracted, such as chemicals and their soil residues, liquid substances, etc., the spectrum detection probe is directly removed and replaced with a sample-inserted spectrum detection chamber, and the chemicals and their soil residues are placed in a transparent sample bottle, and then the transparent sample bottle is placed in the opening of the sample-inserted spectrum detection chamber. The Raman laser emitted by the Raman spectrum detection module is directly irradiated into the transparent sample bottle through the light-transmitting hole or transparent surface to perform sample detection. The collected spectral information is processed by the control mainboard, and then the detection and analysis results are displayed on the screen; or, for low-concentration liquid samples, such as chemicals in matrices such as soil, After the material is extracted with organic solvents, the solution sample with low concentration of chemical substances is directly replaced with the spectrum detection probe by the sample placement spectrum detection chamber, and the low concentration solution sample is dripped on the enhanced substrate of the thin sheet-like surface enhanced Raman detection device, so that the surface of the enhanced substrate contains the compound sample to be tested, and then the surface enhanced Raman detection device is inserted into the slot of the sample placement spectrum detection chamber. The Raman laser emitted by the Raman spectrum detection module is directly irradiated to the enhanced substrate through the light-transmitting hole or the transparent surface to perform sample detection. The collected spectrum information is processed by the control mainboard, and then the detection and analysis results are displayed on the screen.

[0010] The invention has a simple structure and is easy to carry. It has triple functions of Raman spectrum detection, nuclide identification, and radiation detection. It can be operated handheld on site and can provide fast and reliable technical support for on-site detection of firefighting and rescue operations involving nuclear hazardous chemical accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is an overall diagram of the present invention.

[0012] Figure 2 It is a diagrammatic representation of the explosion structure of the present invention.

[0013] Figure 3 It is a schematic diagram of the sample placement type spectral detection chamber of the present invention.

[0014] Numbers in the figure: 1 is the control main board, 2 is the Raman spectrum detection module, 3 is the spectrum 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 shell, 8 is the back shell, 9 is the sample placement type spectrum detection chamber, 10 is the raised part, 11 is the light-transmitting hole, 12 is the Raman laser emission hole, 13 is the cylindrical storage cavity, and 14 is the long strip groove. DETAILED DESCRIPTION

[0015] The present invention comprises a control mainboard 1, a Raman spectrum detection module 2, a spectrum 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; The shell is made of plastic and is in the shape of a rectangular parallelepiped as a whole, including a main shell 7 and a back shell 8. The back of the main shell 7 is open, and a structural baffle is provided at the front to support and fix each component in the shell. The back shell 8 covers the back opening. The control mainboard 1, the Raman spectrum detection module 2, and the built-in battery 5 are arranged in the main shell 7; the Raman spectrum detection module 2 and the built-in battery 5 are connected to the control mainboard 1 through a line; The back shell 8 is provided with a hollow protrusion 10, and the nuclide identification and radiation dose detection module 4 is arranged in the protrusion 10, so that the nuclide identification and radiation dose detection module 4 and the Raman spectrum 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 flat cable; The top of the main shell 7 is provided with a light-transmitting hole 11, and the Raman spectrum detection module 2 is provided with a Raman laser emitting hole 12, which is closely arranged at the inner side of the light-transmitting hole 11; a detachable spectrum detection probe 3 is provided on the outer side of the light-transmitting hole 11; a magnetic suction ring is provided at the position of the light-transmitting hole 11 of the main shell 7 and at the corresponding position on the spectrum detection probe 3, and the main shell 7 and the spectrum detection probe 3 are detachably connected by magnetic suction, and the spectrum detection probe 3 can directly contact the sample for detection, and the length of the spectrum detection probe 3 matches the focus point of the Raman laser, so as to perform more accurate spectrum testing; The magnetic ring can be a ring-shaped magnet, or a magnetic strip arranged in a ring at the position of the light-transmitting hole 11, and a metal strip is provided at the position corresponding to the insertion of the spectrum detection probe 3; a concave card slot is provided at the position of the spectrum detection probe 3 and the light-transmitting hole 11 of the main shell for the magnetic ring and the metal strip to be embedded and fixed; The area around the light-transmitting hole 11 of the main shell 7 is provided with a concave structure, and the corresponding mating surface of the spectrum detection probe 3 is provided with a convex structure, which is convenient for the absorption, installation and positioning of the spectrum detection probe 3; The side of the main shell 7 is also provided with a number of control buttons, which are connected to the control main board 1 through a circuit, and can control and select Raman spectrum detection, nuclide identification, radiation detection, power on and off, etc. The touch control screen 6 is arranged on the front of the main shell 7 and fixed on the baffle. The touch control screen 6 is connected to the control main board 1 through a line. The touch control screen 6 can be used to perform Raman spectrum detection, nuclide identification, radiation dose detection and other control and test parameter setting.

[0016] In addition, a sample placement type spectrum detection chamber 9 is provided, the chamber body is a cube, and an opening is provided on the top surface thereof, which is a round opening, and a cylindrical storage cavity 13 is formed in the chamber body for placing a transparent sample bottle; one side of the chamber body is connected to the main shell 1, and the side is provided with a magnetic attraction ring and a convex structure for positioning, which is used for detachable magnetic attraction positioning connection with the main shell 1; and the side is provided with a through hole for Raman laser to pass through and irradiate into the chamber body; or: the side is provided with an opening, and the convex structure is a transparent block, which is embedded and fixed in the opening, so that Raman laser can pass through the transparent block and irradiate into the chamber body; The cylindrical inner cavity 13 of the chamber body is provided with long strip grooves 14 on the left and right sides respectively, into which a thin sheet-like surface enhanced Raman detection device can be inserted, so that the sample of the surface enhanced Raman detection device faces the light-transmitting hole 11; the Raman laser emitted from the Raman spectrum detection module 2 is irradiated onto the sample in the sample bottle or on the enhanced substrate of the surface enhanced Raman detection device.

[0017] 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.

[0018] When the present invention is used, for the accident scene, the device can be started by the control button first, the function of nuclide identification and radiation dose detection can be selected through the screen, the nuclide identification and radiation dose detection module can be started by the control mainboard, the nuclide type identification and radiation dose detection of the scene environment can be carried out, the detection information of the nuclide identification and radiation dose detection can be processed by the control mainboard, and then the detection result can be displayed on the screen; for the on-site chemical samples, the Raman spectrum detection mode can be switched to start, the spectrum detection probe at the end of the device can be directly aimed at the object to be tested, the Raman laser emitted by the Raman spectrum detection module can be irradiated on the object to be tested, the collected spectrum information can be processed by the control mainboard, and then the detection analysis result can be displayed on the screen; For solid and liquid samples that can be directly extracted, such as chemicals and their soil residues, liquid substances, etc., the spectrum detection probe is directly removed and replaced with a sample-inserted spectrum detection chamber, and the chemicals and their soil residues are placed in a transparent sample bottle, and then the transparent sample bottle is placed in the opening of the sample-inserted spectrum detection chamber. The Raman laser emitted by the Raman spectrum detection module is directly irradiated into the transparent sample bottle through the light-transmitting hole or transparent surface to perform sample detection. The collected spectral information is processed by the control mainboard, and then the detection and analysis results are displayed on the screen; or, for low-concentration liquid samples, such as chemicals in matrices such as soil, After the material is extracted with organic solvents, the solution sample with low concentration of chemical substances is directly replaced with the spectrum detection probe by the sample placement spectrum detection chamber, and the low concentration solution sample is dripped on the enhanced substrate of the thin sheet-like surface enhanced Raman detection device, so that the surface of the enhanced substrate contains the compound sample to be tested, and then the surface enhanced Raman detection device is inserted into the slot of the sample placement spectrum detection chamber. The Raman laser emitted by the Raman spectrum detection module is directly irradiated to the enhanced substrate through the light-transmitting hole or the transparent surface to perform sample detection. The collected spectrum information is processed by the control mainboard, and then the detection and analysis results are displayed on the screen.

[0019] The invention has a simple structure and is easy to carry. It has triple functions of Raman spectrum detection, nuclide identification, and radiation detection. It can be operated handheld on site and can provide fast and reliable technical support for on-site detection of firefighting and rescue operations involving nuclear hazardous chemical accidents.

[0020] 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 may 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.

[0021] 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 should be granted 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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