CN115753730A - Trace explosive detection device under multi-environment - Google Patents
Trace explosive detection device under multi-environment Download PDFInfo
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- CN115753730A CN115753730A CN202211441078.8A CN202211441078A CN115753730A CN 115753730 A CN115753730 A CN 115753730A CN 202211441078 A CN202211441078 A CN 202211441078A CN 115753730 A CN115753730 A CN 115753730A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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- Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
Abstract
The invention discloses a trace explosive detection device in a multi-environment, which comprises a box body, a box cover and a partition plate, wherein the partition plate divides the box body into a filter cavity and a detection cavity, one side of the filter cavity is provided with a detection gas inlet, the partition plate is provided with a partition plate air inlet matched with the detection gas inlet, and one side of the partition plate air inlet is also provided with a negative pressure fan; an explosive gas detection mechanism is also arranged in the detection cavity, and a Raman spectrometer is arranged above the explosive gas detection mechanism; the explosive gas detection mechanism comprises a detection silicon wafer, an upper detection base and a lower detection base, wherein the upper detection base and the lower detection base are used for mounting the detection silicon wafer; a refrigerating module and a heating module are arranged at the bottom of the silicon wafer to be detected; the detection port of the Raman spectrometer is aligned with the silicon wafer to be detected. The invention can realize the rapid judgment of whether the area contains explosives or not by absorbing and collecting the air in the area to be detected and detecting the molecules of the explosives by the collected air.
Description
Technical Field
The invention relates to the field, in particular to a device for detecting trace explosives in multiple environments.
Background
In recent years, progress in science and technology has promoted economic and political development in various countries and regions, and many unstable factors have also been propagated. On a global scale, terrorist attacks are often performed by extremists using various types of concealed explosives, resulting in a large number of innocent human victims.
The explosive detector is a key device and technology for mine sweeping. Therefore, it is very important to develop an explosive detector which is reliable and convenient to use and detect.
The existing explosive detection device is a handheld mine detector, and the principle is to detect the energy field of a metal coil through a physical method to find explosives. Most of the methods can only finish searchlighting detection by manpower, are very influenced by factors of weather environment and detection environment, and have certain limitation. The handheld mine detector is based on the problems of low detection and identification rate, high false detection and omission, long operation time, small detection range, high operation risk and the like of the traditional detection. Therefore, in order to effectively solve the aforementioned problems, it is necessary to provide a trace explosive detection device in multiple environments.
Disclosure of Invention
In order to solve the problems, the invention provides the trace explosive detection device which can be used for trace explosive detection, is suitable for various operating environments, is convenient to quickly detect explosive molecules and is convenient to move and carry under various environments.
In order to achieve the purpose of the invention, the technical scheme adopted by the invention is as follows: a trace explosive detection device under multiple environments comprises a box body and a box cover, wherein the box body is hinged with the box cover, a partition plate is arranged in the box body and divides the box body into a filtering cavity and a detection cavity, a detection gas inlet is formed in one side of the filtering cavity, a partition plate air inlet matched with the detection gas inlet is formed in the partition plate, and a negative pressure fan is further arranged on one side of the partition plate air inlet; a filter screen is arranged on the detection gas inlet; the detection cavity is also provided with a one-way gas outlet valve, the detection cavity is also internally provided with an explosive gas detection mechanism, and a Raman spectrometer is arranged above the explosive gas detection mechanism; the explosive gas detection mechanism comprises a detection silicon wafer, a detection upper base and a detection lower base, wherein the detection upper base and the detection lower base are used for mounting the detection silicon wafer; a refrigerating module and a heating module are arranged at the bottom of the detection silicon wafer, and a mounting opening for mounting the detection silicon wafer is arranged on the detection lower base; the detection port of the Raman spectrometer is aligned with the silicon wafer to be detected.
Furthermore, a liquid source storage tank, a micro-channel and an evaporator storage tank which are connected in sequence are also arranged on the detection silicon wafer; the detection upper base is also provided with a dripped sol molecular port matched with the liquid source storage tank and a waste liquid pool gas outlet matched with the evaporator storage tank, the dripped sol molecular port is connected with a liquid inlet seat, the waste liquid pool gas outlet is connected with a gas outlet pipe, a funnel-shaped through hole is arranged in the liquid inlet seat, the gas outlet pipe is Z-shaped, and the other end of the gas outlet pipe penetrates through the box body; a lens opening matched with the micro-channel is also formed in the detection upper base, and a light-transmitting lens is hermetically arranged in the lens opening; the detection upper base is also provided with a detection air inlet opening which transversely penetrates through the detection upper base; the detection port of the Raman spectrometer is aligned with the micro-channel.
Furthermore, the dripping sol molecular port and the gas outlet of the waste liquid pool are provided with downward extending parts, the extending parts are in sealing fit with the liquid source storage tank and the evaporator storage tank, and the transverse sections of the extending parts are rectangular.
Furthermore, the refrigerating module is a semiconductor refrigerating sheet, and the heating module is a mica heating plate; and temperature sensors are respectively arranged at the bottoms of the refrigerating module and the heating module.
Furthermore, the outside of the detection gas inlet is connected with an air suction pipe, the air suction pipe is in threaded connection with the detection gas inlet, and the air suction pipe is a corrugated pipe or a plastic hose.
Furthermore, the installation opening is also provided with a step part for installing the silicon wafer to be detected, the step part is provided with two positions, and the two step parts are arranged at two sides of the silicon wafer to be detected in the length direction; the detection air inlet opening on the detection upper base penetrates in the length direction of the micro-channel.
Furthermore, the upper detection base and the lower detection base are made of polytetrafluoroethylene.
Further, the detection silicon wafer is rectangular, and the size of the detection silicon wafer is 6mm multiplied by 8mm; the liquid source storage tank and the evaporator storage tank are square, the size of the liquid source storage tank and the size of the evaporator storage tank are 1mm multiplied by 1mm, and the depth of the liquid source storage tank and the depth of the evaporator storage tank are 40 mu m; the microchannel had a length of 5mm, a width of 15 μm and a depth of 4 μm.
Furthermore, the box cover is also provided with an operation panel and a plurality of operation keys; be provided with the battery in the filter chamber, be provided with the interface that charges on the filter chamber, battery and the interface electric connection that charges.
Furthermore, the bottom of the box body is provided with a plurality of pulleys, the top of the box body is provided with a U-shaped handle, the rear side of the box body is provided with a telescopic pull rod, and the pull rod is a luggage pull rod; the box body is connected with the box cover through a plurality of hinges, and a sealing strip is arranged between the box body and the box cover.
The invention has the beneficial effects that: according to the invention, the air inlet of the detection gas is matched with the negative pressure fan, so that the air in the area to be detected can be sucked into the detection cavity, the explosive molecules in the air are detected by the explosive gas detection mechanism, the sol molecule solution for detecting the explosive molecules is arranged on the detection silicon wafer, and after the explosive molecules are in contact reaction with the sol molecule solution, the detection silicon wafer can be detected in real time by using the Raman spectrometer, so that whether the area is filled with the explosive or not is obtained for detection, the mine-clearing efficiency is improved, meanwhile, the explosive judgment is carried out by collecting the air in the area to be detected, and the detection mode is safer. Compared with the traditional handheld mine detector for mine sweeping operation, the device has low requirement on weather environment during detection, can be used for explosive detection operation in any weather, is not only used for mine sweeping operation detection, but also can be used for explosive detection in large public places.
The invention comprises a Raman spectrometer, a detection silicon wafer for controlling the flow of sol molecules, a heating module and a refrigerating module for controlling the flow rate and direction, a filter screen for entering gas and a negative pressure fan. The invention filters suspended particles with large diameter in the air to make the air to be detected pass through the silicon wafer to be detected, and the sol molecules on the silicon wafer to be detected are mixed with the explosive molecules. The micro-channel is irradiated by laser to enable molecular spectrum signals to be collected by a Raman spectrometer and used for detecting explosive molecules and judging whether the detected air contains the explosive molecules or not. The invention utilizes the heating module and the refrigerating module to heat and evaporate the sol molecules flowing into the waste liquid pool of the micro-channel so as to generate capillary force on the detection silicon wafer and drive the fluid to continuously flow, so that the sol molecules in the micro-channel on the sol molecule detection silicon wafer flow at a certain flow speed.
Drawings
FIG. 1 is a schematic external view of the present invention;
FIG. 2 is a schematic view of the present invention with the cover removed;
FIG. 3 is a partial enlarged view A of FIG. 2;
FIG. 4 is a schematic view of the outer shape of the upper base;
FIG. 5 is a schematic view of another direction of the upper base;
FIG. 6 is a front view of the upper base of the test;
FIG. 7 is a top view of the upper base of the test;
FIG. 8 is a sectional view taken along line B-B of FIG. 7;
FIG. 9 is a schematic external view of a refrigeration module and a heating module;
FIG. 10 is a schematic external view of a test silicon wafer, a cooling module and a heating module;
FIG. 11 is a schematic view of a cooling module and a heating module mounted on a lower inspection base;
FIG. 12 is a schematic view showing the outer shape of the upper base for inspection in example 2;
FIG. 13 is a right side view of the upper base for detection in embodiment 2;
FIG. 14 is a front view of the upper base for detection in embodiment 2;
fig. 15 is a cross-sectional view taken along line C-C of fig. 14.
The main component symbols in the figures are explained as follows:
1. a box body; 2. a box cover; 3. a partition plate; 4. a detection gas inlet; 5. a negative pressure fan; 6. a one-way air outlet valve; 7. a Raman spectrometer; 8. an operation panel; 10. a battery; 11. a charging interface; 12. a detection mechanism base; 13. an air intake duct;
9. an explosive gas detection mechanism; 91. a liquid inlet seat; 92. an air outlet pipe;
93. detecting the silicon wafer; 931. a liquid source storage tank; 932. a microchannel; 933. an evaporator storage tank;
94. detecting the upper base; 941. dripping a sol molecular port; 942. a waste liquid pool gas outlet; 943. a lens opening; 944. detecting a gas inlet opening;
95. detecting the lower base; 96. a refrigeration module; 97. a heating module.
Detailed Description
The following description of the embodiments of the present invention is provided to facilitate the understanding of the present invention by those skilled in the art, but it should be understood that the present invention is not limited to the scope of the embodiments, and it will be apparent to those skilled in the art that various changes may be made without departing from the spirit and scope of the invention as defined and defined in the appended claims, and all matters produced by the invention using the inventive concept are protected.
Example 1
As shown in fig. 1, 2 and 3, the device for detecting trace explosives in multiple environments comprises a box body 1 and a box cover 2, wherein the box cover 2 is hinged on the box body 1, a partition plate 3 is arranged in the box body 1, the box body 1 is divided into a filter chamber and a detection chamber by the partition plate 3, a detection gas inlet 4 is arranged on one side of the filter chamber, a partition plate air inlet matched with the detection gas inlet 4 is arranged on the partition plate 3, and a negative pressure fan 5 is further arranged on one side of the partition plate air inlet. A filter screen is arranged on the detection gas inlet 4. The detection cavity is further provided with a one-way gas outlet valve 6, the detection cavity is further provided with an explosive gas detection mechanism 9, and a Raman spectrometer 7 is arranged above the explosive gas detection mechanism 9.
As shown in fig. 4, 5, 6, 7 and 8, the explosive gas detection mechanism 9 includes a detection silicon wafer 93, and a detection upper base 94 and a detection lower base 95 on which the detection silicon wafer 93 is mounted, the detection upper base 94 and the detection lower base 95 being fixedly connected. The explosive gas detection mechanism 9 is fixed at the bottom of the box body 1 through the detection mechanism base 2.
As shown in fig. 9, 10 and 11, a cooling module 96 and a heating module 97 are provided on the bottom of the inspection silicon wafer 93, and a mounting opening for mounting the inspection silicon wafer 93 is provided on the inspection lower base 95. Wherein, a heat conducting fin is arranged between the detection silicon wafer 93 and the refrigeration module 96 and between the detection silicon wafer 93 and the heating module 97, and the refrigeration module 96 and the heating module 97 are attached to the bottom of the heat conducting fin. The detection port of the raman spectrometer 7 is aligned with the inspection silicon wafer 93, and the detection port of the raman spectrometer 7 is preferably aligned with the middle position of the microchannel 932.
As shown in FIG. 10, the inspection silicon wafer 93 is further provided with a liquid source reservoir 931, a microchannel 932 and an evaporator reservoir 933 connected in this order. The upper detection base 94 is also provided with a dripped sol molecular port 941 matched with the liquid source storage tank 931 and a waste liquid tank gas outlet 942 matched with the evaporator storage tank 933, the dripped sol molecular port 941 is connected with a liquid inlet seat 91, the waste liquid tank gas outlet 942 is connected with an air outlet pipe 92, a funnel-shaped through hole is arranged inside the liquid inlet seat 91 and is Z-shaped with the air outlet pipe 92, and the other end of the air outlet pipe 92 penetrates through and is arranged on the box body 1. The air outlet pipe 92 is convenient for discharging water vapor, so that the water vapor in the sol molecules is discharged by matching with the evaporator storage tank 933, the evaporator storage tank 933 is favorable for supplementing the sol molecule solution from the liquid source storage tank 931 through the micro-channel 932, and therefore, the new sol molecule solution in the micro-channel 932 is in reaction contact with the air to be detected, and the continuous detection is ensured. By using the capillary force among the liquid source reservoir 931, the microchannel 932, and the evaporator reservoir 933, the evaporation loss of the sol molecular solution in the evaporator reservoir 933 can be continuously compensated. A lens opening 943 matched with the micro-channel 932 is further formed in the detection upper base 94, and a light-transmitting lens is hermetically installed in the lens opening 943; the transparent lens can penetrate through a detection pipeline of the Raman spectrometer 7, and meanwhile, a closed cavity can be formed between the upper side surface of the detection silicon wafer 93 and the detection upper base 94 and the detection lower base 95. The detection upper base 94 is provided with a detection air inlet opening 944 that penetrates in the longitudinal direction of the microchannel 932. The detection port of the raman spectrometer 7 is aligned with the microchannel 932 for detecting the mixture of the sol molecular solution and the air to be detected passing through the microchannel 932. The capacity of the tube dropping cassette 98 is 1.1 times or more the sum of the capacities of the liquid source reservoir 931, the micro flow channel 932 and the evaporator reservoir 933.
In this embodiment, the dropped sol molecular port 941 and the waste liquid pool gas outlet 942 are provided with downward extending portions, which are sealingly bonded to the liquid source reservoir 931 and the evaporator reservoir 933, and have rectangular transverse cross-sections. The extending part can smoothly guide the sol molecular solution in the liquid inlet pipe 91 to the liquid source storage tank 931, so as to ensure that the sol molecular solution does not overflow or is guided to the outside of the liquid source storage tank 931.
In this embodiment, the gas outlet tube 92 evaporates water in the sol molecular solution vaporized in the vaporizer reservoir 933 and discharges the evaporated water from the gas outlet tube 92 to the detection device, so that the sol molecular solution in the intermediate liquid source reservoir 931 can be continuously replenished into the vaporizer reservoir 933 by capillary force. The cooling module 96 is preferably a semiconductor cooling plate and the heating module 97 is preferably a mica heating plate. The bottom of refrigeration module 96 and heating module 97 still is provided with temperature sensor respectively, and temperature sensor is convenient for real-time supervision refrigeration module 96 and the temperature of heating module 97, conveniently monitors the velocity of flow of sol molecule solution in microchannel 932.
In the embodiment, an air suction pipe 13 is connected to the outside of the detection gas inlet 4, the air suction pipe 13 is in threaded connection with the detection gas inlet 4, and the air suction pipe 13 is a corrugated pipe or a plastic hose; one end of the air suction pipe 13 is under the action of the negative pressure fan 5, and the other end of the air suction pipe also generates negative pressure, so that air in the area to be detected is absorbed and collected.
In this embodiment, the mounting opening is further provided with a step for mounting the inspection silicon wafer 93, the step is provided with two positions, the two steps are provided at two sides of the inspection silicon wafer 93 in the length direction, and the step facilitates fixing the inspection silicon wafer 93 and can fix the cooling module 96 and the heating module 97. A detection air inlet opening 944 on the detection upper base 94 is penetratingly provided in the longitudinal direction of the microchannel 932.
In the present embodiment, the upper detection base 94 and the lower detection base 95 are made of teflon. The polytetrafluoroethylene has high temperature resistance, corrosion resistance and stable chemical property.
In this embodiment, the inspection silicon wafer 94 has a rectangular shape, and the size of the inspection silicon wafer 94 is 6mm × 8mm. The liquid source reservoir 931 and the evaporator reservoir 933 are square, and the size of the liquid source reservoir 931 and the size of the evaporator reservoir 933 are 1 mm. Times.1 mm, and the depth of the liquid source reservoir 931 and the depth of the evaporator reservoir 933 are 40. Mu.m. Micro-channel 932 had a length of 5mm, a width of 15 μm and a depth of 4 μm.
In this embodiment, the box cover 2 is further provided with four operation panels 8 and a plurality of operation keys, and the operation panels 8 are displays. Still be provided with battery 10 in the filter chamber, be provided with the interface 11 that charges on the filter chamber, battery 10 with charge interface 11 electric connection. The bottom of the box body 1 is provided with a plurality of pulleys, and the pulleys are preferably case pulleys, so that the detection device can be moved conveniently. The top of box 1 is provided with the U-shaped handle, and this detection device is conveniently removed to the U-shaped handle. The rear side of box 1 is provided with the telescopic pull rod, and the pull rod is the case and bag pull rod, can contract on box 1 during the pull rod normality, and the influence detects, when needs remove this detection device, can conveniently cooperate the pulley through the pull rod and realize this detection device's removal. The box body 1 is connected with the box cover 2 through a plurality of loose leaves, a sealing strip is further arranged between the box body 1 and the box cover 2, and the sealing strip can effectively prevent outside air from entering the detection cavity, so that the detection result is prevented from being influenced.
Example 2
As shown in fig. 12, 13, 14 and 15, embodiment 2 differs from embodiment 1 in that the orientation of the detection air intake opening 944 is different, the detection upper base 94 is provided with the detection air intake opening 944 penetrating in the width direction of the microchannel 932, and the detection air intake opening 944 and the exhaust side of the negative pressure fan 5 are perpendicular to each other.
Working principles among the liquid source reservoir 931, the micro flow channel 932, and the evaporator reservoir 933 are as follows: the evaporator storage tank 933 serves as an evaporation area, and the left edge of the evaporator storage tank 933 is held at the dew point by the cooling module 96 under the inspection silicon wafer 93 in order to maintain the temperature gradient of the evaporator storage tank 933 by adjusting the temperature of the heating module 97. At the same time, the right edge of evaporator reservoir 933 is heated. This temperature gradient produces vapor losses within evaporator reservoir 933, so most of the evaporation losses occur at the bottom, top and right side of evaporator reservoir 933. By controlling the temperature gradient to vaporize these regions, the region where the microchannel 932 flows out is centered at the left edge of the vaporizer reservoir 933 and is not blocked by the particles in the microchannel 932 due to vaporization. This design allows for a stable solution of sol molecules entering vaporizer reservoir 933 in vaporizing microchannels 932 without causing clogging in the system over time. The evaporator storage tank 933 is evaporated by the structure of the liquid source storage tank 931, the micro flow channel 932 and the evaporator storage tank 933, and the fresh sol molecular solution in the left liquid source storage tank 931 can supplement evaporation loss by capillary force within at least several hours by utilizing the continuous evaporation effect.
And a detection principle part: opening the box cover 2, and adding a sol molecular solution required for detection in the pipeline liquid inlet seat 91 in advance; the box cover 2 is closed, the preset temperature is reached through the power-on regulation refrigeration module 96 and the heating module 97, after the preset temperature is reached, the negative pressure fan 5 is powered on to start working, the air inlet of the air suction pipe 13 is arranged in the detection area and used for collecting air of the area to be detected, the collected air to be detected passes through the detection gas inlet 4, coarse particle impurities are filtered through the filter screen and then enter the detection cavity, finally the collected air to be detected enters the upper part of the micro-channel 932 on the detection silicon wafer 93 through the detection gas inlet opening 944 on the detection upper base 94 and passes through the micro-channel 932, explosive molecules (such as 2, 4-DNT) in the air to be detected are combined with silver sol in the micro-channel, and agglomeration of the colloid is triggered to form a dimer and a trimer. And finally, detecting by a Raman spectrometer 7 to obtain a Raman spectrum of the sol area in the flow channel, thereby judging whether the air to be detected contains explosives. Wherein the dimer refers to the coupling of explosive molecules between two sols at the position of the hot spot with the strongest electromagnetic field enhancement and Raman scattering enhancement"position, the Raman scattering signal of 2,4-DNT molecule at the position is 3-4 orders of magnitude higher than that of 2,4-DNT molecule adsorbed on silver sol monomer, and the enhancement reaches 10 9 -10 10 This is why the dimer is used in the present invention.
The sol molecule solution in the invention is preferably a silver sol solution, the diameter of the silver sol is 35-40nm, and the concentration is 10-9mol/L. After the silver sol adsorbs 2,4-DNT, the charge distribution on the surface of the sol is changed, so that an explosive molecule-sol connector becomes a charge polar molecule, and the connection with a silver sol monomer is promoted to form a dimer. The flow rate control of the silver sol solution will affect the amount of dimer formation, if the flow rate is too slow, multiple polymer forms are likely to appear when the fluid passes through the laser focusing area, and in a fixed laser irradiation time, the low flow rate may cause the number of explosive molecules interacted by the laser to be less, which is not favorable for collecting Raman scattering signals. If the flow rate is too fast, explosive molecules in the air cannot be sufficiently adsorbed to the surface of the sol, so that the dimer is reduced, which is also unfavorable for collecting the raman scattering signal. The flow rate of the silver sol solution in the microchannel 932 is controlled by the cooling module 96 and the heating module 97 in cooperation.
The operation process part:
the first step, press the button No. 1 of leftmost button on the display screen, the front view is 1, 2, 3, 4 button serial numbers from left to right in proper order, and battery 10 switches on this moment, and operating panel 8 is including the display screen, and the display screen circular telegram is started and each carrying equipment circular telegram, and negative pressure fan 5 begins the operation.
And step two, pressing a 2 nd button of the display screen, starting acquisition and transmission by the humidity sensors at the bottoms of the refrigerating module 96 and the heating module 97 and the temperature sensor at the back, displaying numerical values in the display screen, keeping the temperature of the refrigerating module 96 at a dew point temperature when the refrigerating module 96 and the heating module 97 reach preset temperatures, indicating that the temperature in the detected silicon wafer 93 reaches a working condition, setting the preset temperature threshold of the refrigerating module 96 to be 0 ℃ and the preset temperature threshold of the heating module 97 to be 75 ℃, and determining according to actual condition design, so that the speed of the micro-channel 932 is proper, and the detection of the Raman spectrometer 7 is not influenced.
Thirdly, opening the box cover 2, adding the prepared sol molecules into the liquid inlet seat 91 in advance, and closing the box cover 2; the 3 rd button on the operation panel 8 is turned on, and the display starts to transmit the signal detected by the raman spectrometer 7.
And fourthly, pressing a 4 th switch button of the display screen, disconnecting the power supply of each load carrying device, stopping the rotation of the negative pressure fan 5, and disconnecting the power of the operation panel.
Claims (10)
1. The device for detecting the trace explosives in the multi-environment is characterized by comprising a box body (1) and a box cover (2), wherein the box body (1) is hinged with the box cover (2), a partition plate (3) is arranged in the box body (1), the box body (1) is divided into a filtering cavity and a detection cavity by the partition plate (3), a detection gas inlet (4) is formed in one side of the filtering cavity, a partition plate air inlet matched with the detection gas inlet (4) is formed in the partition plate (3), and a negative pressure fan (5) is further arranged on one side of the partition plate air inlet; a filter screen is arranged on the detection gas inlet (4);
the detection cavity is also provided with a one-way gas outlet valve (6), the detection cavity is also internally provided with an explosive gas detection mechanism (9), and a Raman spectrometer (7) is arranged above the explosive gas detection mechanism (9);
the explosive gas detection mechanism (9) comprises a detection silicon wafer (93), a detection upper base (94) and a detection lower base (95), wherein the detection upper base (94) and the detection lower base (95) are used for mounting the detection silicon wafer (93), a mounting opening for mounting the detection silicon wafer (93) is formed in the detection lower base (95), and the detection upper base (94) is fixedly connected with the detection lower base (95); a refrigerating module (96) and the heating module (97) are arranged at the bottom of the detection silicon wafer (93); the detection port of the Raman spectrometer (7) is aligned with the silicon wafer (93).
2. The multi-environment trace explosive detection device according to claim 1, characterized in that a liquid source storage tank (931), a micro-channel (932) and an evaporator storage tank (933) connected in sequence are further provided on said detection silicon wafer (93); the upper detection base (94) is also provided with a sol dripping molecular port (941) matched with the liquid source storage tank (931) and a waste liquid tank gas outlet (942) matched with the evaporator storage tank (933), the sol dripping molecular port (941) is connected with a liquid inlet seat (91), the waste liquid tank gas outlet (942) is connected with an air outlet pipe (92), a funnel-shaped through hole is formed in the liquid inlet seat (91), the air outlet pipe (92) is Z-shaped, and the other end of the air outlet pipe (92) penetrates through and is installed on the box body (1); the upper detection base (94) is also provided with a lens opening (943) matched with the micro-channel (932), and a light-transmitting lens is hermetically arranged in the lens opening (943); the upper detection base (94) is also provided with a detection air inlet opening (944) which transversely penetrates through the upper detection base; the detection port of the Raman spectrometer (7) is aligned with the micro-channel (932).
3. The multi-environment trace explosive detection device according to claim 2, wherein the dripped sol molecular port (941) and the waste liquid pool gas outlet (942) are provided with downward extensions which are in sealing engagement with the liquid source storage tank (931) and the evaporator storage tank (933), and the lateral cross-section of the extensions is rectangular.
4. The multi-environment trace explosive detection device according to claim 1, wherein said cooling module (96) is a semiconductor cooling plate, and said heating module (97) is a mica heating plate; the bottoms of the refrigerating module (96) and the heating module (97) are also respectively provided with a temperature sensor.
5. The multi-environment trace explosive detection device according to claim 1, wherein an air suction pipe (13) is connected to the outside of the detection gas inlet (4), the air suction pipe (13) is in threaded connection with the detection gas inlet (4), and the air suction pipe (13) is a corrugated pipe or a plastic hose.
6. The multi-environment trace explosive detection device according to claim 1, wherein a step portion for mounting the inspection silicon wafer (93) is further provided on the mounting opening, the step portion is provided in two places, and the two step portions are provided on both sides of the inspection silicon wafer (93) in a length direction; and a detection air inlet opening (944) on the detection upper base (94) penetrates in the length direction of the micro-channel (932).
7. The multi-environment trace explosive detection device according to claim 1, wherein the upper detection base (94) and the lower detection base (95) are made of polytetrafluoroethylene.
8. The multi-environment trace explosive detection device according to claim 2, characterized in that said inspection silicon wafer (94) is rectangular, said inspection silicon wafer (94) having a size of 6mm x 8mm; the liquid source reservoir (931) and the evaporator reservoir (933) each have a square shape, the liquid source reservoir (931) and the evaporator reservoir (933) have a size of 1mm × 1mm, and the liquid source reservoir (931) and the evaporator reservoir (933) have a depth of 40 μm; the microchannel (932) has a length of 5mm, a width of 15 μm, and a depth of 4 μm.
9. The multi-environment trace explosive detection device according to claim 1, wherein an operation panel (8) and a plurality of operation keys are further arranged on the box cover (2); the filter cavity is internally provided with a storage battery (10), a charging interface (11) is arranged on the filter cavity, and the storage battery (10) is electrically connected with the charging interface (11).
10. The multi-environment trace explosive detection device according to claim 1, wherein a plurality of pulleys are arranged at the bottom of the box body (1), a U-shaped handle is arranged at the top of the box body (1), a telescopic pull rod is arranged at the rear side of the box body (1), and the pull rod is a luggage pull rod; the box body (1) is connected with the box cover (2) through a plurality of hinges, and a sealing strip is arranged between the box body (1) and the box cover (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211441078.8A CN115753730A (en) | 2022-11-17 | 2022-11-17 | Trace explosive detection device under multi-environment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211441078.8A CN115753730A (en) | 2022-11-17 | 2022-11-17 | Trace explosive detection device under multi-environment |
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| CN115753730A true CN115753730A (en) | 2023-03-07 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1525162A (en) * | 2003-09-16 | 2004-09-01 | 中国科学院合肥智能机械研究所 | Explosives detector and fabrication method |
| CN105136769A (en) * | 2015-08-12 | 2015-12-09 | 中国人民解放军总装备部军械技术研究所 | Trace ammunition detector and detection method |
| CN106885797A (en) * | 2017-03-16 | 2017-06-23 | 安徽中科赛飞尔科技有限公司 | A kind of orientation surface enhancing Raman spectra detection process based on high activity site |
| CN108204965A (en) * | 2018-04-13 | 2018-06-26 | 中国人民解放军63908部队 | A kind of micro-fluidic light quantum substance finger print target of NERS-SERS substrates |
| CN217237747U (en) * | 2022-04-26 | 2022-08-19 | 中国人民武装警察部队特种警察学院 | Small explosive fusion detection device |
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2022
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1525162A (en) * | 2003-09-16 | 2004-09-01 | 中国科学院合肥智能机械研究所 | Explosives detector and fabrication method |
| CN105136769A (en) * | 2015-08-12 | 2015-12-09 | 中国人民解放军总装备部军械技术研究所 | Trace ammunition detector and detection method |
| CN106885797A (en) * | 2017-03-16 | 2017-06-23 | 安徽中科赛飞尔科技有限公司 | A kind of orientation surface enhancing Raman spectra detection process based on high activity site |
| CN108204965A (en) * | 2018-04-13 | 2018-06-26 | 中国人民解放军63908部队 | A kind of micro-fluidic light quantum substance finger print target of NERS-SERS substrates |
| CN217237747U (en) * | 2022-04-26 | 2022-08-19 | 中国人民武装警察部队特种警察学院 | Small explosive fusion detection device |
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