CN212410427U - Device for detecting inflammable and explosive substances - Google Patents

Abstract

The utility model relates to the technical field of detection devices, a device for detecting inflammable and explosive materials is disclosed, including send out the ware, first reflection room, second reflection room, mirror spare, return mirror and support body entirely, first reflection room, second reflection room are arranged on the support body, return mirror and mirror spare respectively with support body fixed connection entirely, send out the ware and emit the ray to mirror spare, the ray passes through mirror spare after, passes through first reflection room, then passes through mirror spare, reaches through second reflection room and returns the mirror entirely, the ray returns on the original way; through setting up first reflecting plate and second reflecting plate, the ray that connects the sending-out ware transmission passes gas at first reflecting plate and second reflecting plate many times, reaches the total reflection mirror at last after, total reflection mirror totally reflection ray to the ray is followed original reflection path and is returned to in sending-out ware, send-out ware analysis reflection ray, because the ray passes through gas many times, thereby improved the sensitivity to the detection of the flammable and explosive material that contains in the gas.

Description

Device for detecting inflammable and explosive substances

Technical Field

The patent of the utility model relates to a detection device's technical field particularly, relates to a device for detecting inflammable and explosive thing.

Background

In the existing security inspection process, the requirement of detecting the material components of gas, solid or liquid exists, and in order to quickly detect the material components of the substance to be detected, the material components are obtained by calculating according to the result of multiple reflections of rays on the surface of the substance, which is increasingly popular.

At present, in the explosion detection method, a receiver mainly emits rays, the rays reach a first reflecting plate after passing through gas to be detected, the rays are directly returned to the receiver after being reflected by the first reflecting plate, the rays pass through the gas to be detected twice, and the returned rays are analyzed by the receiver, so that components contained in the current gas are obtained.

In the prior art, a comprehensive detection device which can be used for solid, liquid and gas is lacked, and the detection sensitivity of the existing detection method is not high enough.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a device and device for detecting inflammable and explosive thing aims at providing a device for detecting inflammable and explosive thing.

The utility model discloses a realize like this for detect flammable and explosive device, including being used for launching or receiving the ray send out the ware, be used for placing the solid or liquid sample that awaits measuring the first reflecting chamber, be used for placing the gaseous sample that awaits measuring the second reflecting chamber, be used for reflecting ray's mirror spare, be used for reflecting ray's full return mirror and support body; the first reflecting chamber and the second reflecting chamber are arranged on the frame body, and the full-return mirror and the mirror piece are respectively fixedly connected with the frame body.

Further, the first reflection chamber comprises a first reflection plate and a second reflection plate which are oppositely arranged and arranged in parallel, and the second reflection plate is shorter than the first reflection plate; the mirror piece comprises a first mirror piece and a second mirror piece, wherein the first mirror piece and the first reflection plate are arranged at intervals and are arranged at angles.

Further, the second lens and the first reflection plate are arranged at intervals and are arranged at an angle.

Further, the reflecting surface of the first mirror plate faces the first reflecting plate.

Further, the first lens and the second lens are obliquely arranged in the same direction.

Further, the second reflection chamber comprises a third reflection plate and a fourth reflection plate, and the third reflection plate and the fourth reflection plate are connected with the frame body; the total-return mirror is fixedly connected with the lower end of the fourth reflecting plate.

Further, the third reflector plate and the fourth reflector plate are vertically arranged and oppositely arranged.

Further, the total return mirror faces the third reflection plate.

Furthermore, the hair extension device is movably connected with the frame body, and the transmitting head and the receiving head of the hair extension device face the first lens.

Furthermore, a positioning lamp is connected to the transceiver, a calibration part is formed on the full-return mirror, and the positioning lamp emits visible light to the calibration part.

Compared with the prior art, the utility model provides a device for detecting inflammable and explosive thing, through setting up first reflection room and second reflection room, it sends out the ware and returns the mirror entirely to have set up, the ray is at first reflection room multiple reflection on solid or the liquidity waits to detect the sample, and the ray is in the second reflection room multiple reflection and wait to detect the sample through the gas form, the ray is received the back like this, can detect the material composition that waits to detect the sample in the ray, and because the ray is that the multiple contact waits to detect the sample, because the number of contacts is more, the sensitivity of detection is higher and higher, very sensitive on the detection precision of treating the detection material.

Drawings

Fig. 1 is a schematic step diagram of an explosion detection method provided by the present invention;

fig. 2 is a schematic perspective view of the device for detecting flammable and combustible substances provided by the present invention;

fig. 3 is a schematic perspective view of the device for detecting flammable and combustible substances provided by the present invention;

fig. 4 is a schematic front view of the device for detecting flammable and combustible substances provided by the present invention;

fig. 5 is a schematic top view of a second reflector provided by the present invention;

fig. 6 is a schematic block diagram of a detection system for a gate explosion detection module provided by the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The following describes the implementation of the present invention in detail with reference to specific embodiments.

The same or similar reference numerals in the drawings of the present embodiment correspond to the same or similar components; in the description of the present invention, it should be understood that if there are the terms "upper", "lower", "left", "right", etc. indicating the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of the description, but it is not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore the terms describing the positional relationship in the drawings are only for illustrative purposes and are not to be construed as limitations of the present patent, and those skilled in the art can understand the specific meanings of the terms according to specific situations.

Referring to fig. 1-6, the preferred embodiment of the present invention is shown.

The device for detecting the inflammable and explosive substances provided by the embodiment can be used for detecting various inflammable and explosive substances and can also be used for detecting other substances to be detected.

The comprehensive detection method based on multiple reflections and attenuated total reflections comprises a transceiver 17, a first reflection chamber 12, a second reflection chamber 15, a mirror 20 and a fixing piece 16, wherein the transceiver 17 is used for transmitting or receiving rays, the first reflection chamber 12 is used for placing a solid or liquid sample to be detected, the second reflection chamber 15 is used for placing a gas sample to be detected, the mirror 20 is used for reflecting or splitting rays, and the fixing piece 16 is used for reflecting or receiving rays, and the comprehensive detection method comprises the following steps:

1) the transceiver 17 emits rays to the mirror element 20, the rays are reflected into the first reflecting chamber 12 after passing through the mirror element 20, then are reflected into the second reflecting chamber 15 by the mirror element 20, and the rays are reflected in the first reflecting chamber 12 and the second reflecting chamber 15 for multiple times in sequence and respectively pass through a sample to be detected;

or, the transceiver 17 emits the radiation to the mirror 20, the mirror 20 splits the radiation into the first reflection chamber 12 and the second reflection chamber 15, and the radiation is reflected multiple times in the first reflection chamber 12 and the second reflection chamber 15 to pass through the sample to be detected; the rays are reflected for a plurality of times in the first reflecting chamber 12 and then return to the mirror 20, and then return to the transceiver 17 after being reflected by the mirror 20;

2) the fixed member 16 is arranged in the second reflecting chamber 15, and after multiple reflections of the rays in the second reflecting chamber 15, the rays reach the fixed member 16,

the fixing piece 16 reflects rays, returns to the mirror piece 20 after multiple reflections in the second reflecting chamber 15, enters the first reflecting chamber 12 again, and is reflected back to the transceiver 17 by the mirror piece 20 after multiple reflections again;

alternatively, the mounting 16 absorbs radiation;

3) the transceiver 17 or the mount 16 converts the radiation into a data result.

By arranging the first reflection chamber 12 and the second reflection chamber 15, the transceiver 17 and the fixing member 16 are arranged, the radiation is reflected on the solid or liquid sample to be detected for multiple times in the first reflection chamber 12, and the radiation is reflected for multiple times in the second reflection chamber 15 and passes through the gas sample to be detected, so that after the radiation is received, the substance component of the detected sample to be detected can be detected from the radiation, and the radiation contacts the sample to be detected for multiple times, the more the radiation contacts, the higher the detection sensitivity is, and the sensitivity is very sensitive on the detection precision of the substance to be detected.

The first reflecting chamber 12 comprises a first reflecting plate, a second reflecting plate and a placing part for placing a sample to be detected; the first reflecting plate and the second reflecting plate are arranged at intervals, and a first reflecting chamber 12 is formed by enclosing the first reflecting plate and the second reflecting plate; the first reflecting plate and the second reflecting plate are horizontally arranged and are oppositely arranged, and the placing part is positioned between the first reflecting plate and the second reflecting plate.

The second reflection chamber 15 comprises a third reflection plate 19 and a fourth reflection plate 18, the fixing piece 16 is connected with the fourth reflection plate 18, and the third reflection plate 19 and the fourth reflection plate 18 are arranged at intervals to enclose the second reflection chamber 15; the third reflection plate 19 and the fourth reflection plate 18 are vertically arranged and face each other.

Wherein the fixing member 16 is located at the lower end of the fourth reflection plate 18, so that the rays reach the fixing member 16 after being reflected between the third reflection plate 19 and the fourth reflection plate 18 for a plurality of times, and the fixing member 16 reflects or absorbs the rays; when the fixture 16 is a perfect returning mirror 16, the fixture 16 reflects the rays; when the fixture 16 is a detector, the fixture 16 absorbs the radiation and no longer reflects between the third reflector plate 19 and the fourth reflector plate 18 and no longer back into the first reflector chamber 12 or the transceiver 17.

Wherein the mirror 20 is a mirror or a beam splitter for splitting the radiation into two or even more radiation beams.

In the step (1), the rays are split by the mirror 20 and then respectively pass through the light shielding plates, and the light shielding plates further concentrate the rays into ray bundles.

Wherein, in the step (1), the ray is reflected by the mirror 20, the mirror 20 comprises a first mirror 13 and a second mirror 14, and the first mirror 13 and the second mirror 14 are arranged at intervals; the radiation is reflected on the first mirror 13 and enters the first reflection chamber 12, and then exits the first reflection chamber 12 and is reflected from the second mirror 14 and enters the second reflection chamber 15.

Further, the comprehensive detection method based on multiple reflections and attenuated total reflections includes that the frame 11, the fixing member 16, the mirror member 20, the first reflection plate, the second reflection plate, the third reflection plate 19, and the fourth reflection plate 18 are all fixedly connected to the frame 11.

In another embodiment, in step (1), after the transceiver 17 is activated, the transceiver 17 is connected to a positioning lamp, and the full-return mirror 16 is formed with a calibration portion, so that the transceiver 17 is subjected to angle calibration, and positioning light emitted by the positioning lamp is reflected in the second reflection chamber 15 for multiple times and then is emitted to the calibration portion, so that the transceiver 17 can be subjected to angle calibration.

And the transceiver 17 is located on the midperpendicular line in the width direction of the third reflection plate 19 or the fourth reflection plate 18; specifically, the light emitted from the position lamp is visible light, and the collimating part is formed on the midperpendicular line of the width direction of the third reflecting plate 19 or the fourth reflecting plate 18.

Wherein the sequencing and function of the first and second reflector chambers may be interchanged, and is only a matter of choice in numerical relationship, and the first and second reflector chambers are only conventional sequencing.

In yet another embodiment, multiple reflecting chambers may be used in the combined detection method based on multiple reflections and attenuated total reflection to meet the requirements of different sensitivity and selectivity, different performance and different applications.

In yet another embodiment, the integrated detection method based on multiple reflections and attenuated total reflection may use just one of the reflecting chambers, without requiring two reflecting chambers, in particular, wherein the first reflecting chamber may be absent or the second reflecting chamber may be absent.

And a plurality of beam splitters or a plurality of reflectors are used for splitting beams among the plurality of reflecting chambers.

Also, the spectral frequency of the radiation emitted and received by the transceiver 17 may be in the continuous or discontinuous band from ultraviolet, visible, near infrared, mid infrared to far infrared to meet the requirements of different sensitivity and selectivity, different performance and different applications.

Also, the spectroscopic method of the spectrum of the radiation transmitted and received by the transceiver 17 may be prism spectroscopy, grating spectroscopy, and interference spectroscopy.

In addition, the light source of the radiation emitted and received by the transceiver 17 may be a common light source and a laser light source, including a quantum cascade laser light source.

The type of the radiation may be near-infrared light, laser light, or raman light, and near-infrared light is preferable.

The receiver 17 is also a spectrometer main body through which near infrared light can be emitted, thus performing high-precision detection of a substance.

Further, a placing space for placing a gas is formed in the second reflecting chamber 15, and a non-gas sample cell is provided on the first reflecting chamber 12, so that the radiation is reflected between the first reflecting plate and the second reflecting plate a plurality of times and contacts the solid or liquid substance to be detected in the non-gas sample cell a plurality of times, thereby detecting the substance component of the solid or liquid substance to be detected.

In particular, wherein the non-gaseous sample cell is arranged between the third 19 and fourth 18 reflective plates.

The first, second, third and fourth reflectors 19, 18 are coated with a film on the surface of the reflectors by using a pre-coating technique, and the coating material is preferably gold, because gold can completely reflect the radiation, thereby preventing the radiation from scattering or refracting when the radiation is reflected between the first, second or third reflectors 19, 18.

The device for detecting flammable and explosive substances as shown in fig. 2-4 comprises a transceiver 17, a first reflection chamber 12, a second reflection chamber 15, a mirror 20, a full-return mirror 16 and a frame body 11, wherein the transceiver 17 is used for transmitting or receiving rays, the first reflection chamber 12 is used for placing a solid or liquid sample to be detected, the second reflection chamber 15 is used for placing a gas sample to be detected, the mirror 20 is used for reflecting rays, and the full-return mirror 16 is used for reflecting rays; first reflection chamber 12, second reflection chamber 15 are arranged on support body 11, and full return mirror 16 and mirror 20 respectively with support body 11 fixed connection, send out the ray toward mirror 20 when receiving and send out ware 17, the ray passes through mirror 20 after, passes through first reflection chamber 12, then passes through mirror 20, reaches full return mirror 16 through second reflection chamber 15 again, the ray returns on its way.

By arranging the first reflection chamber 12 and the second reflection chamber 15, the transceiver 17 and the fixing member 16 are arranged, the radiation is reflected on the solid or liquid sample to be detected for a plurality of times in the first reflection chamber 12, and the radiation is reflected for a plurality of times in the second reflection chamber 15 and passes through the gas sample to be detected, so that after the radiation is received, the substance component of the detected sample to be detected can be detected from the radiation, and since the radiation contacts the sample to be detected for a plurality of times, the detection sensitivity is higher due to the fact that the contact times are more, and the detection accuracy of the substance to be detected is very sensitive.

Wherein the first reflection chamber 12 includes a first reflection plate and a second reflection plate which are arranged oppositely and in parallel, the second reflection plate is shorter than the first reflection plate; the mirror 20 comprises a first mirror 13 and a second mirror 14, wherein the first mirror 13 and the first reflector are arranged at intervals and at an angle; and the second lens 14 and the first reflector are arranged at intervals and in an angle, the reflecting surface of the first lens 13 faces the first reflector, and the first lens 13 and the second lens 14 are obliquely arranged in the same direction, so that rays are reflected for multiple times between the first reflector and the second reflector after passing through the first lens 13, then come out and are reflected by the second lens 14, and then enter the second reflector chamber 15.

Specifically, the second lens 14 extends toward the first reflection plate and the third reflection plate 19 to form an included angle.

The second reflection chamber 15 also comprises a third reflection plate 19 and a fourth reflection plate 18, and the third reflection plate 19 and the fourth reflection plate 18 are connected with the frame body 11; the total-return mirror 16 is fixedly connected with the lower end of the fourth reflecting plate 18; the third reflector plate 19 and the fourth reflector plate 18 are vertically arranged and oppositely arranged; the retro-reflector 16 is directed towards the third reflector plate 19 so that the radiation reflected by the retro-reflector 16 can be completely routed back into the transceiver 17.

Specifically, the hair extension device 17 is movably connected to the frame 11, and the transmitting head and the receiving head of the hair extension device 17 face the first lens 13.

A positioning lamp is connected to the transceiver 17, a calibration portion is formed on the full return mirror 16, and the positioning lamp emits visible light to the calibration portion to calibrate the transceiver 17.

In another embodiment, the frame 1111 is provided with a damping structure, the damping structure comprises a spring, an upper plate and a lower plate, the upper plate and the lower plate are connected through the spring, the third reflecting plate 19 and the full-return mirror 16 are connected with the upper plate, and when the explosion detection device is arranged in an airport or station where many people walk, the damping structure is arranged to prevent the detection problem caused by vibration.

Fig. 5 shows another embodiment of the second reflection chamber 15, which includes a third reflection plate 19 and a fourth reflection plate 18 formed with folding surfaces having reflection capability, the folding lines of the reflection surfaces of the third reflection plate 19 and the fourth reflection plate 18 are arranged opposite to each other, and the angle of the folding surface is 90 degrees; when the radiation receiver emits the radiation to the left of the folding surface of the third reflection plate 19, the radiation is reflected to the right of the folding surface of the third reflection plate 19, then reflected to the right of the folding surface of the fourth reflection plate 18, then reflected to the left of the folding surface of the fourth reflection plate 18, and reaches the total return mirror 16 after being circulated for many times, and the radiation returns to the first reflection chamber 12 according to the original reflection path, and then returns to the receiver 17 through the first mirror 13.

Through setting up the folded surface, the ray also can pass through a gas between the left and right sides of folded surface reflection's in-process to the sensitivity of the flammable and explosive thing in the detection gas has further been improved.

As shown in fig. 6, the comprehensive detection method based on multiple reflections and attenuated total reflections uses a gate explosion detection module detection system, which comprises the following components: quantum cascade laser instrument (spectrum appearance) host computer, multiport transponder (HUB), backstage server, control chip, aspiration pump, light screen, ID card detection device, floodgate machine front/back door switch, fan, wherein control chip is used for controlling the operation of each part, uses the RK2388 mainboard.

The substance to be detected has a concentration limit, for example, the lowest detection concentration of acetone is 1ppm, the lowest detection concentration of alcohol is 2.5ppm, the lowest detection concentration of ammonia is 1ppm, and the lowest detection concentration of methanol is 1ppm, which are only some of the examples, but not the corresponding lowest detection limit of all the substances that can be detected by the spectrometer host.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims (10)

1. The device for detecting the inflammable and explosive substances is characterized by comprising a receiver for transmitting or receiving rays, a first reflecting chamber for placing a solid or liquid sample to be detected, a second reflecting chamber for placing a gaseous sample to be detected, a mirror piece for reflecting the rays, a full-return mirror for reflecting the rays and a frame body; the first reflection chamber and the second reflection chamber are arranged on the frame body, the full-return mirror and the mirror piece are respectively and fixedly connected with the frame body, when the transceiver sends rays to the mirror piece, the rays pass through the mirror piece and then pass through the first reflection chamber, then pass through the mirror piece and then pass through the second reflection chamber to reach the full-return mirror, and the rays return in the original way.

2. The apparatus for detecting inflammables and explosives according to claim 1, wherein the first reflection chamber comprises a first reflection plate and a second reflection plate which are arranged opposite and in parallel, the second reflection plate being shorter than the first reflection plate; the mirror piece comprises a first mirror piece and a second mirror piece, wherein the first mirror piece and the first reflection plate are arranged at intervals and are arranged at angles.

3. The apparatus for detecting combustibles and explosives of claim 2, wherein the second lens is spaced from and angled with respect to the first baffle.

4. The apparatus for detecting inflammables and explosives according to claim 3, wherein a reflective surface of the first lens faces the first reflective plate.

5. The device for detecting the presence of a combustible explosive according to any one of claims 2 to 4, characterized in that said first lens is inclined in the same direction as said second lens.

6. The apparatus for detecting inflammables and explosives according to any of claims 1-4, wherein the second reflection chamber comprises a third reflection plate and a fourth reflection plate, and the third reflection plate and the fourth reflection plate are connected with the frame body; the total-return mirror is fixedly connected with the lower end of the fourth reflecting plate.

7. The apparatus for detecting inflammables and explosives according to claim 6, wherein said third reflector plate and said fourth reflector plate are arranged upright and facing.

8. The apparatus for detecting inflammables and explosives according to claim 7, wherein said retro-reflector is directed towards said third reflector plate.

9. The apparatus for detecting flammable and combustible materials according to any one of claims 2 to 4, wherein the transceiver is movably connected with the frame body, and the transmitting head and the receiving head of the transceiver face the first lens.

10. The apparatus for detecting flammable and combustible substances according to any one of claims 1 to 4, wherein a positioning lamp is connected to the transceiver, a calibration portion is formed on the retro-reflector, and the positioning lamp emits visible light to the calibration portion.

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