CN210894071U - Raman spectrometer accessory for explosive detection - Google Patents

Abstract

The utility model provides a raman spectroscopy appearance accessory for explosive detects, includes the sleeve, and the sleeve passes through damping rubber ring and raman spectroscopy appearance's probe end zonulae occludens, and the inside fixed mounting of one end that the sleeve is close to the probe end has single lens, and the inside fixed mounting of one end that the sleeve kept away from the probe end has a micro array lens, and micro array lens is corresponding with single lens, and micro array lens is arranged the combination according to the array by a plurality of convex lens. The utility model overcomes prior art's is not enough, including the sleeve, telescopic one end internal surface fixed mounting has the damping rubber ring, and the sleeve passes through the damping rubber ring and raman spectroscopy's probe end zonulae occludens, and telescopic another terminal surface fixed mounting has the light-passing board, and the sleeve is close to the inside fixed mounting of one end of probe end and has a single lens, and the sleeve is kept away from the inside fixed mounting of one end of probe end and is had micro array lens, and micro array lens is corresponding with the single lens, micro array lens is by a plurality of convex lens according to the array permutation and combination.

Description

Raman spectrometer accessory for explosive detection

Technical Field

The utility model relates to an accessory technical field of raman spectroscopy appearance, concretely relates to raman spectroscopy appearance accessory for explosive detects.

Background

The new variety of explosives which continuously appear at present and the diversification of explosion means bring great difficulty to the detection of explosives in the national security department, and provide higher and higher requirements for the detection technology of the explosives. Common explosives include organic explosives mainly comprising TNT and inorganic explosives such as black powder mainly comprising nitrate. The currently commonly used explosive detection technologies include ion mobility spectrometry, ultraviolet fluorescence mass spectrometry, chemical reagent methods and the like, and means for detecting by using animal olfaction. Explosives detection methods need to be able to detect organic and inorganic explosives quickly, accurately and sensitively.

The raman spectrum detection technology is a high-efficiency spectrum detection technology which is rapidly developed in recent years. In the raman spectrum detection, raman scattered light of a sample is excited by laser, the raman scattered light is subjected to spectrum analysis, and information such as the composition and content of a substance to be detected is obtained through database contrast analysis. Because the Raman spectrum detection technology does not need to carry out sample pretreatment when in use, can quickly obtain the component information of a sample within a few seconds, and has high accuracy, the Raman spectrum detection technology is increasingly applied to the fields of food safety, drug detection, jewelry identification, environmental monitoring and the like. With the miniaturization and the improvement of integration of devices, the volume of the raman spectrum detection equipment is continuously reduced. A plurality of small Raman spectrum detectors appear on the market at present. The small-sized Raman spectrum detector is simple to operate, can quickly and accurately detect and identify suspicious substances on a detection site, and greatly improves the detection efficiency.

When the small-sized Raman spectrometer detects explosives, although the component information of the explosives can be obtained within a few seconds, when the laser emitted by the small-sized Raman spectrometer through the probe is focused on the surface of the explosives, the local temperature of the surface of the explosives can be overhigh within a few seconds, so that the explosives are in danger of explosion. In addition, because the probe of the small-sized raman spectrometer is short in size, when detecting explosives, a detection person needs to use an instrument to be close to a detected sample, and if combustion or explosion occurs, the detection person and the instrument are easily damaged. Therefore from the safe angle of starting, effectively guarantee personal safety, protection instrument realizes that safe explosive detects and is the utility model discloses the technical problem who wants to solve.

SUMMERY OF THE UTILITY MODEL

The utility model provides a be not enough to prior art, the utility model provides a raman spectroscopy appearance accessory for explosive detects has overcome prior art not enough, reasonable in design makes the laser beam produce a plurality of focus points on the sample surface through micro array lens to this with laser beam energy dispersion, can prevent effectively that sample surface local temperature is too high, thereby has avoided the explosive because of the danger of the high emergence explosion of temperature.

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes:

the utility model provides a raman spectroscopy appearance accessory for explosive detects, includes the sleeve, telescopic one end internal surface fixed mounting has the damping rubber ring, the sleeve passes through the probe end zonulae occludens of damping rubber ring and raman spectroscopy appearance, another terminal surface fixed mounting of sleeve has the light-passing board, the sleeve is close to the inside fixed mounting of one end of probe end and has the single lens, the sleeve is kept away from the inside fixed mounting of one end of probe end and is had micro array lens, micro array lens is corresponding with the single lens, micro array lens is arranged the combination according to the array by a plurality of convex lens.

Preferably, the sleeve includes fixed sleeve and telescope tube, the probe end zonulae occludens of damping rubber ring and raman spectroscopy is passed through to fixed sleeve's one end, single lens fixed mounting is inside fixed sleeve, the slip chamber has been seted up to fixed sleeve's the other end inside, slip intracavity sliding connection has the telescope tube, microarray lens fixed mounting is inside the telescope tube.

Preferably, the surface of the fixed sleeve is provided with a locking pin, and the locking end of the locking pin penetrates through the fixed sleeve to be in contact with the telescopic sleeve.

Preferably, the probe end is connected with the Raman spectrometer through an optical fiber.

Preferably, the sleeve comprises a sleeve barrel and a working sleeve, the end part of the sleeve barrel is tightly connected with the probe end through a damping rubber ring, the outer surface of the sleeve barrel is provided with external threads, the inner surface of one end of the working sleeve is provided with internal threads, the working sleeve is movably connected with the outer surface of the sleeve barrel through threads, and the single lens is fixedly arranged inside the working sleeve; the outer surface of the working sleeve is movably connected with a locking threaded sleeve through threads, and the end part of the locking threaded sleeve is fixedly provided with an elastic gasket and is in contact with the side end of the sleeve joint barrel.

The utility model provides a raman spectroscopy appearance accessory for explosive detects. The method has the following beneficial effects: the laser beam generates a plurality of focusing points on the surface of the sample through the micro-array lens, so that the energy of the laser beam is dispersed, the local over-high temperature of the surface of the sample can be effectively prevented, and the danger of explosion of explosives due to over-high temperature is avoided; simultaneously the utility model discloses a telescopic length can be adjusted, when detecting the explosive for detection personnel carry out Raman spectroscopy to the sample outside safe distance and detect, has strengthened the security performance when detecting suspicious explosive, has also expanded the scope of the detectable sample of small-size Raman spectroscopy detector.

Drawings

In order to more clearly illustrate the present invention or the technical solutions in the prior art, the drawings used in the description of the prior art will be briefly described below.

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic structural view of a second embodiment of the present invention;

FIG. 3 is a schematic diagram of a micro-array lens according to the present invention;

fig. 4 is a schematic structural diagram of a third embodiment of the present invention;

fig. 5 is a schematic structural diagram of a fourth embodiment of the present invention;

the reference numbers in the figures illustrate:

1. a sleeve; 2. a damping rubber ring; 3. a Raman spectrometer; 4. a probe end; 5. a single lens; 6. a micro-array lens; 7. a light-transmitting plate; 8. fixing the sleeve; 9. a telescopic sleeve; 10. a sliding cavity; 12. a locking pin; 13. an optical fiber; 14. sleeving a sleeve; 15. a working sleeve; 16. locking the threaded sleeve; 17. an elastic pad; 18. and (3) sampling.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the drawings of the present invention will be combined below to clearly and completely describe the technical solutions of the present invention.

Embodiment one, as shown in fig. 1 and fig. 3, a raman spectrometer accessory for explosive detection includes a sleeve 1, a damping rubber ring 2 is fixedly installed on an inner surface of one end of the sleeve 1, the sleeve 1 is tightly connected with a probe end 4 of the raman spectrometer 3 through the damping rubber ring 2, a light-transmitting plate 7 is fixedly installed on the other end surface of the sleeve 1, a single lens 5 is fixedly installed inside one end of the sleeve 1 close to the probe end 4, a micro-array lens 6 is fixedly installed inside one end of the sleeve 1 far away from the probe end 4, the micro-array lens 6 corresponds to the single lens 5, and the micro-array lens 6 is formed by arranging and combining a plurality of convex lenses according to an array.

Before detection, a probe end 4 of a Raman spectrometer 3 is nested on the inner surface of one end of a sleeve 1, the nested front and back positions are adjusted to ensure that a convergence point of laser output by the probe end 4 coincides with a focus of a single lens 5 in the sleeve 1, and then the damping rubber ring 2 on the inner surface of the sleeve 1 is clamped and fixed; during detection, laser output by the probe end 4 can become parallel light after passing through the single lens 5, and then when the laser of the parallel light passes through the micro-array lens 6 along the inside of the sleeve 1, the parallel light is spatially divided into a plurality of tiny parts by the convex lenses arranged and combined in a plurality of arrays on the surface of the micro-array lens 6, each part is focused on the plane of the sample 18 by the corresponding convex lens, so that the laser beam projected on the surface of the sample 18 is composed of a plurality of decomposed laser light spots, the energy of the laser beam is not converged at one point of the sample but dispersed at a plurality of points at different positions, the temperature of the single point on the surface of the sample 18 is greatly reduced, and the risk of detonation caused by overhigh local temperature of the surface of the sample is avoided.

In the second embodiment, as shown in fig. 2 and 3, based on the further improvement of the first embodiment, the sleeve 1 includes a fixed sleeve 8 and a telescopic sleeve 9, one end of the fixed sleeve 8 is closely connected to the probe end 4 of the raman spectrometer 3 through the damping rubber ring 2, the single lens 5 is fixedly installed inside the fixed sleeve 8, a sliding cavity 10 is opened inside the other end of the fixed sleeve 8, the telescopic sleeve 9 is slidably connected to the sliding cavity 10, and the microarray lens 6 is fixedly installed inside the telescopic sleeve 9. And the surface of the fixed sleeve 8 is provided with a locking pin 12, and the locking end of the locking pin 12 passes through the fixed sleeve 8 to be contacted with the telescopic sleeve 9.

Therefore, when the working distance of the Raman spectrometer 3 needs to be increased, the distance between the single lens 5 and the micro array lens 6 can be increased through the sliding connection relation between the telescopic sleeve 9 and the fixed sleeve 8, because laser is parallel light between the single lens 5 and the micro array lens 6, the energy loss of the laser in the transmission process can not be caused by the increase of the distance, the laser can be transmitted to the micro array lens 6 without loss after being transmitted at a longer distance, the Raman excitation efficiency of the Raman spectrometer 3 is kept, and the problem that a sample cannot be contacted with the sample at a special position because the probe end 4 of the Raman spectrometer 3 is too short is solved. And after the extended distance of the telescopic sleeve 6 is adjusted, the telescopic sleeve 6 is locked and fixed through the locking pin 14 to ensure the stability in operation.

Third embodiment, as shown in fig. 4, based on a further modification of the first embodiment, the probe end 4 is connected with the raman spectrometer 3 through an optical fiber 13. Therefore, when the working environment that the Raman spectrometer 3 is not convenient to stretch into is met, the probe end 4 can be stretched into, and the Raman spectrum information detected by the probe end 4 is transmitted into the Raman spectrometer 3 through the optical fiber 13 to analyze the Raman spectrum information of the sample 18.

In the fourth embodiment, as shown in fig. 5, based on further improvement of the first embodiment, the sleeve 1 includes a sleeve 14 and a working sleeve 15, an end of the sleeve 14 is tightly connected with the probe end 4 through a damping rubber ring 2, an external thread is arranged on an outer surface of the sleeve 14, an internal thread is arranged on an inner surface of one end of the working sleeve 15, the working sleeve 15 is movably connected to the outer surface of the sleeve 14 through a thread, and the single lens 5 is fixedly installed inside the working sleeve 15; the outer surface of the working sleeve 15 is movably connected with a locking screw sleeve 16 through threads, and the end part of the locking screw sleeve 16 is fixedly provided with an elastic gasket 17 and is contacted with the side end of the sleeve joint 14. Before detection, the probe end 4 is inserted into the sleeve joint barrel 14 and clamped and fixed through the damping rubber ring 2, and then the position of the working sleeve 15 is finely adjusted through the threaded connection relationship between the working sleeve 15 and the sleeve joint barrel 14, so that the focus of the single lens 5 is superposed with the convergence point of the laser output by the probe end 4; after the adjustment is completed, the locking thread insert 16 on the outer surface of the working sleeve 15 is rotated, so that the elastic gasket 17 of the locking thread insert 6 is abutted against the end part of the sleeve joint barrel 14, and the working sleeve 15 can be limited and fixed.

The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims (5)

1. A raman spectrometer accessory for explosives detection, comprising a sleeve (1), characterized in that: the utility model discloses a Raman spectrometer, including sleeve (1), one end internal surface fixed mounting of sleeve (1) has damping rubber ring (2), sleeve (1) is through damping rubber ring (2) and probe end (4) zonulae occludens of Raman spectrometer (3), another terminal surface fixed mounting of sleeve (1) has light-passing board (7), the inside fixed mounting of one end that sleeve (1) is close to probe end (4) has single lens (5), the inside fixed mounting of one end that probe end (4) was kept away from in sleeve (1) has microarray lens (6), microarray lens (6) are corresponding with single lens (5), microarray lens (6) are arranged the combination according to the array by a plurality of convex lens.

2. A raman spectrometer accessory for explosives detection in accordance with claim 1, wherein: sleeve (1) is including fixed sleeve (8) and telescope tube (9), damping rubber ring (2) and the probe end (4) zonulae occludens of raman spectroscopy (3) are passed through to the one end of fixed sleeve (8), single lens (5) fixed mounting is inside fixed sleeve (8), slip chamber (10) have been seted up to the other end of fixed sleeve (8) inside, telescope tube (9) sliding connection in slip chamber (10), microarray lens (6) fixed mounting is inside telescope tube (9).

3. A raman spectrometer accessory for explosives detection as claimed in claim 2, wherein: the surface of the fixed sleeve (8) is provided with a locking pin (12), and the locking end of the locking pin (12) penetrates through the fixed sleeve (8) to be in contact with the telescopic sleeve (9).

4. A raman spectrometer accessory for explosives detection in accordance with claim 1, wherein: the probe end (4) is connected with the Raman spectrometer (3) through an optical fiber (13).

5. A raman spectrometer accessory for explosives detection in accordance with claim 1, wherein: the sleeve (1) comprises a sleeve barrel (14) and a working sleeve (15), the end part of the sleeve barrel (14) is tightly connected with the probe end (4) through a damping rubber ring (2), the outer surface of the sleeve barrel (14) is provided with an external thread, the inner surface of one end of the working sleeve (15) is provided with an internal thread, the working sleeve (15) is movably connected to the outer surface of the sleeve barrel (14) through a thread, and the single lens (5) is fixedly arranged inside the working sleeve (15); the outer surface of the working sleeve (15) is movably connected with a locking threaded sleeve (16) through threads, and the end part of the locking threaded sleeve (16) is fixedly provided with an elastic gasket (17) and is in contact with the side end of the sleeve joint (14).

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