CN205262812U - Darkroom formula security installations - Google Patents

Abstract

The utility model provides a darkroom formula security installations. Darkroom formula security installations includes casing and the inside part of casing that constitutes inclosed darkroom, and the inside part of casing includes: sampling system, sampling system include conveyer, detect the sample collection device of being examined the X ray detection device of the position of object and being used for gathering the sample, and wherein X ray detection device is used for confirming being examined the relevant position of object in reacing sampling system to to examine object conveying to the position of hopeing together with conveyer, sample processing system, wherein, sampling system, sample processing system and sample test system pass through the connecting piece intercommunication. The utility model discloses a security installations can make things convenient for, fast, effectively the sample circuit detect, the bale breaking does not destroy quarantine objects article, is suitable for the quick examination detection to prohibited articles such as airport, customs.

Description

Darkroom formula rays safety detection apparatus

Technical field

The utility model relates to safety detection field, particularly, relates to the darkroom formula luggage security detection equipment based on IMS and GC-MS thereof.

Background technology

Science and technology make rapid progress, economic globalization deepen continuously development society, the social concerns such as the attack of terrorism, food security, medical and health safety, drug smuggling have a strong impact on and are threatening people's life, property and healthy and safe. For safeguarding normal civil order, ensure the people's life, property, healthy and safe, the detection technique based on various detection principles and relevant device thereof are flourish like the mushrooms after rain in recent years.

Wherein, ion mobility spectrometry (IMS) technology is simple in structure because having, highly sensitive, the feature that analysis speed is fast and be widely used in detection or the monitoring of the aspects such as chemical warfare agent, drugs, explosive and environment.

Due to IMS superior performance, the various device based on IMS technology and GC-MS thereof also just comes onto stage at detection fields such as food, cosmetics and medical and health gradually. gas-chromatography-ion mobility spectrometry (GC-IMS) GC-MS takes full advantage of the outstanding separation characteristic of GC and IMS responds fast, highly sensitive advantage, cross sensitivity (crosssensitivity) problem having existed when not only effectively having solved the low distinguishing ability of GC and IMS mixture being detected, but also can obtain chromatographic retention, drift time and the analyte finally signal strength signal intensity of induction on Faraday plate of checking matter ion in migration tube, the graphics spectrum information of the checking matter obtaining with this can effectively be differentiated the sample of complicated component accurately. at following fight against terrorism and violence, drug smuggling, environmental monitoring, food security, the field GC-IMS detection techniques such as medical and health supervision are by effectiveness powerful performance.

But traditional IMS and coupling equipment thereof mainly comprise the modes such as hand-held, portable, desk-top and gate-type, sampling inconvenience in actual applications, causes detection efficiency low; Maybe need to destroy detected material; For the such inspected object of luggage case and bag, need to unpack, very inconvenient.

The efficiency of the product collected specimens of expectation IMS or its coupling equipment is high, and picking rate is fast, in the situation that ensureing accuracy, need not destructive sample, and can in the situation that not unpacking, realize on-the-spot fast inspection; And, expect can there is the characteristic that detects aspect chemical and detection speed fast to the adaptable device of goods size in occasions such as existing critical points.

Utility model content

Given this, at least one aspect that provides a kind of rays safety detection apparatus to address the above problem is provided the purpose of this utility model, can ensure accuracy in the situation that fast, need not destructive sampling carry out site inspection.

According to the utility model on the one hand, provide a kind of darkroom formula luggage security check equipment, comprise and form the airtight housing in darkroom and the parts of enclosure interior, the parts of enclosure interior comprise:

Sampling system, sampling system comprises in order to tested object being sent to conveyer in sample collecting apparatus from the external world, detect tested object position x-ray detection device and for the sample collecting apparatus of collected specimens, wherein x-ray detection device is for determining the position of tested object in sampling system, to tested object is sent to the position of expectation together with conveyer;

Sample processing system, for concentrating sample and parsing sample; With

Specimen inspection system, detects sample composition by gas-chromatography-ionic migration spectrometer or independent ionic migration spectrometer;

Wherein, sampling system, sample processing system and specimen inspection system are communicated with by connector, make to be admitted to tested object in the housing that forms airtight darkroom and complete in housing collection, processing and the detection of sample.

According to one side of the present utility model, x-ray detection device comprises launching the x ray generator of X ray, detector and display unit for detecting x-ray, and x-ray detection device shows the inclusion of checking matter inside for surveying the residue X ray penetrating after tested object to show the position of tested object in sampling system simultaneously.

According to one side of the present utility model, the conveyer of sampling system comprises conveyer belt and conveyer belt facing, the both sides of the edge of conveyer belt and conveyer belt facing are configured to fit structure, make conveyer belt facing allow conveyer belt to move and form hermetically-sealed construction with conveyer belt under the motionless state of conveyer belt.

According to one side of the present utility model, conveyer belt facing is formed by deformable material, under the motionless state of conveyer belt, in the housing due to darkroom, forms negative pressure, and the distortion of conveyer belt facing forms sealing with conveyer belt.

According to one side of the present utility model, sample collecting apparatus comprises sampling cavity, sampling cavity has first end and second end relative with first end, and wherein said conveyer is positioned at first end, and sampling cavity also comprises near the sample export of the discharge sample of the second end;

Wherein, sampling cavity also comprises inflation entrance and the exhaust outlet of the wall that is positioned at sampling cavity, inflation entrance is configured to be blown into air-flow in sampling cavity, exhaust outlet is configured to Exhaust Gas, to form tornado air-flow in sampling cavity together with inflation entrance, described tornado air-flow is along spiral the advancing of first end to the second end from sampling cavity, and the sample that tested object carries is thus transferred near the second end by tornado air-flow.

According to one side of the present utility model, inflation entrance is arranged to inflate the axial admission direction of entrance and the inner surface of cavity inner wall and approaches tangently, and the axial admission direction of inflation entrance is oblique towards sample export inclination.

According to one side of the present utility model, the inwall of the cavity of sampling is at least partly formed frusto-conical shape, and the small diameter circular end of conical butt inwall is near the first end of cavity, and the large-diameter circular end of conical butt inwall is near the second end.

According to one side of the present utility model, sampling system comprises heating filter screen, for sample from first end in the time that the second end transmits to sample filtering, can heat tested object with the sample volatilization that helps tested object and carry simultaneously or depart from tested object.

According to one side of the present utility model, sampling system comprises that pellicle is for selective filter sample, and pellicle is separated out the space for mixing with carrier gas in sampling cavity.

According to one side of the present utility model, sample processing system comprises pre-concentration sampling absorber, comprises for the absorption screen drum of concentrating sample and the piston rod for the sample of absorption screen drum is sent by piston; With

Chamber is analysed in pyrolysis, at high temperature separating out the sample of absorption screen drum, and uses suitable carrier gasses and sample mix.

According to one side of the present utility model, specimen inspection system comprises porous capillary post and the ionic migration spectrometer for pre-separation sample.

This darkroom formula luggage security check equipment can be on-the-spot fast inspection provide one easily and fast, effectively sampling and sample injection method and detection means fast and accurately, do not realized and having unpacked, do not destroy under article situation to be checked fast, trace detection. Be very suitable for that airport, customs etc. are infected with drugs, explosive, the violated chemical reagent of volatility, the surface of solids and the rapid screening of other prohibited items detects.

In order to reach above-mentioned utility model object, the utility model technology and implementation can also be realized as follows:

The utility model is applicable to darkroom formula luggage quick rays safety detection apparatus and corresponding sample collection and the method for concentration of the analytical instrument such as fast GC-IMS, IMS, GC-IMS-MS.

The utility model has the advantage of:

Adopt the cyclone sampling system of closed, can carry out whole body sampling to tested row bag, simultaneously because cyclone sample mode has the powerful active force of sucking, so can greatly improve in sampling process, volatility, half volatile sample or the adhesion of in row bag, carrying secretly are expert at and are wrapped the collecting efficiency of surperficial solid granule shape sample, realized and not opened in bag situation effumability half volatile material and the surface contamination traces of solids material Direct Sampling of carrying in row bag;

Darkroom of the present utility model formula luggage security check equipment can concentrate the sample gathering in the time of sample detection, can reduce the requirement of the detection lower limit to IMS detector, has reduced development difficulty and the cost of instrument; Can realize positive and negative ion and detect simultaneously, positive and negative collection of illustrative plates is set up to association, compare to monotype and improved detection speed; This darkroom formula luggage security check equipment adopts full-time pre-concentration sample collection technology, can greatly improve the collecting efficiency of sample, improves the detection efficiency of instrument.

Compare to the conventional row bag rays safety detection apparatus based on X ray, darkroom of the present utility model formula luggage security check equipment has higher detection spirit lightness to the volatility, the half volatile prohibited items that carry in row bag, can under the situation of not unpacking, accurately know the kind of carrying violated product, can also utilize x-ray detection device tested object to be carried out to the inspection of other belongings simultaneously. Darkroom of the present utility model formula rays safety detection apparatus is realized integral structure and is more comprehensively checked.

Brief description of the drawings

For content described in the utility model is more easily understood, below in conjunction with accompanying drawing and specific implementation method, the utility model is described further, in the accompanying drawings:

Fig. 1 is this darkroom formula luggage security check equipment sampling process schematic diagram of the present utility model;

Fig. 2 is that sample introduction schematic diagram is analysed in this darkroom formula luggage security check equipment sampling pyrolysis of the present utility model;

Fig. 3 is this darkroom formula luggage security check equipment side schematic view of the present utility model;

Fig. 4 is this darkroom formula luggage security check equipment eddy flow boot disk of the present utility model (while forming complete circle boot disk) top cross-sectional view;

Description of symbols in Fig. 1,2,3,4:

101 equlizing supports;

102 rays safety detection apparatus metal fuselage screening cans;

103 feed belts;

104 conveyer belt facings;

105 eddy flow boot disk;

106 whirl hole;

107O shape sealing ring;

108 tested row bags;

109 gas ductings;

110 wind guide chambers;

111 muffs;

112 inflator pumps;

113 pump-lines;

114 aspiration pumps;

115 heating filter screens;

116 bottom clamping nets;

117 pellicles;

118 top clamping nets;

119 top leak lids;

120 sample collection tube connectors;

121 sample collection tube connector heating and thermal insulation covers;

122 heating rods;

123 temp probes;

124 sample collection interfaces;

125 sampling asepwirator pump interfaces;

126 sampling asepwirator pumps;

127 high temperature resistant O-ring seals;

128 piston cylinders;

129 piston rods;

130 absorption screen drums;

131 mat insulations;

Chamber is analysed in 132 pyrolysis;

133 bushing pipes;

134 carrier gas inlets;

135 shuntings/purging interface;

136MCC post;

137 heat conduction sheaths;

138 double mode ionic migration spectrometers;

139 sampling carrier gas interfaces;

140X ray generator;

141L shape detector array;

142 infrared sensors;

143 rolling screen door;

144 lead screen curtains.

Detailed description of the invention

Provide detailed reference to embodiment of the present utility model now, its example illustrates in the accompanying drawings, and numeral identical in figure all represents identical element. For explaining that the following embodiment of the utility model is described with reference to accompanying drawing.

According to embodiment of the present utility model, a kind of darkroom formula rays safety detection apparatus based on IMS and GC-MS thereof, for example darkroom formula luggage quick rays safety detection apparatus (as Fig. 1,2) based on IMS and GC-MS thereof, comprises the housing 102 that forms airtight darkroom. In enclosure interior, multiple parts are set, the parts of enclosure interior comprise: sampling system, sample processing system, x-ray detection device and specimen inspection system, they are communicated with by tube connector or joint, or are fixed in frame. Alternatively, x-ray detection device can be arranged in outside darkroom, and in other words, x-ray detection device can not be communicated with said system, and this has advantageously reduced the pollution risk of the system to these connections.

The parts of rays safety detection apparatus inside comprise that such as chamber, chromatographic column, heat-insulation system, ionic migration spectrometer etc. are analysed in tornado sampling cavity, full-time pre-concentration sampler, pyrolysis. Darkroom of the present utility model formula luggage security check equipment adopts multiple equlizing supports 101 to support rays safety detection apparatus metal fuselage screening can 102 and fixed support (casing thickness requires to be enough to shield ray). Darkroom of the present utility model formula luggage security check equipment adopts conveyer belt 103 to transmit tested row bag 108, provides support for tested row bag 108 simultaneously, and feed belt 103 is by reducing motor transmission. The conveyer belt facing 104 coordinating with feed belt is installed in feed belt 103 both sides, the both sides of conveyer belt facing 104 coordinate formation fit structure with conveyer belt 103, make conveyer belt facing 104 allow conveyer belt 103 to move and form hermetically-sealed construction with conveyer belt under the motionless state of conveyer belt, so that whole darkroom forms sealed environment. Conveyer belt facing 104 is formed by deformable material, in the time of sample collection, conveyer belt stops operation, due to negative pressure, 104 distortion of conveyer belt facing compress conveyer belt 103, thereby extraneous air or other materials can not enter in space, darkroom from the gap between conveyer belt 103 and conveyer belt facing 104, reduce outer bound pair sample collection and analyzing and testing and disturb. It will be recognized by those skilled in the art that and other can be set in other cases as required for transmitting the device of sample.

According to an embodiment of the present utility model, the sampling system of darkroom formula rays safety detection apparatus comprises x-ray detection device. X-ray detection device comprises x ray generator 140, X-ray detector and display.

Particularly, be equipped with lead screen curtain 144 in the detector gate entry and exit of rays safety detection apparatus, on the cabinet sidewall of rays safety detection apparatus entrance, infrared sensor 142 be installed simultaneously. In the time that infrared sensor 142 detects tested row bag 108 and enters rays safety detection apparatus, the rolling screen door 143 that is distributed in cabinet entrance and exit hangs down, and whole safety check chamber forms airtight darkroom, and decelerating through motor, thereby conveyer belt slows down. Subsequently, for example, after about 0.5 second, x ray generator 140 starts bundle, X-ray detector 141 detecting x-rays of for example L shaped array as shown in the figure, and carry out opto-electronic conversion, then the signal after conversion is delivered to preamplifier and main amplifier, through A/D converter, carry out Digital Image Processing to digital image processing system again, display line bag tomography transmission image on display. Along with object 108 travels forward, each cross section of tested row bag 108 is by continuous sweep, the X ray energy value being absorbed by all cross sections of luggage or case and bag 108 can go on record, and so just can obtain the complete two-dimensional projection image of whole row bag 108 from x-ray source to detector direction. Thus, display case is as the inner inclusion of tested object 108 of case and bag; Meanwhile, the image showing by display, can determine the position of tested object 108, and in the time that tested object 108 arrives the position of expecting, conveyer belt stops operation. According in embodiment of the present utility model, x-ray detection device is arranged in sampling system, both can, for determining the position of tested object 108, can detect in tested object 108 whether comprise violated object simultaneously. According in an embodiment of the present utility model, x-ray detection device is arranged in sampling system, can in tested object 108 enters sampling system, start tested object 108 to carry out scanography, observe illegal belongings such as whether there being such as cutter in tested object 108; The image that meanwhile, can show according to display judges that whether tested object 108 is in desired locations. According in an embodiment of the present utility model, x-ray detection device is arranged in sampling system, and the image that can show according to display judge that whether tested object 108 is in desired locations; At tested object 108, after desired locations, x-ray detection device carries out scanography to tested object 108, for example, scanned tested object 108 is scanned by x ray generator 140. X ray does not affect other samples that carry except the illegal belongings such as cutter in tested object 108 on the scanning of tested object 108, these samples check judgement by the specimen inspection system of rays safety detection apparatus of the present utility model. Darkroom of the present utility model formula luggage security check equipment comprises sampling system, sampling system comprise sample collecting apparatus and in order to tested object 108 is sent to sample collecting apparatus so as to check conveyer. Sample collecting apparatus comprises sampling cavity, and sampling cavity has second end relative with first end of first end and sampling cavity, and wherein conveyer is positioned at first end, and sampling cavity also comprises near the sample export of the discharge sample the second end; Wherein, sampling cavity also comprises inflation entrance 106 and the exhaust outlet of the wall that is positioned at sampling cavity, inflation entrance 106 is configured to be blown into air-flow in sampling cavity, exhaust outlet is configured to Exhaust Gas, to form tornado air-flow in sampling cavity together with inflation entrance 106, described tornado air-flow is along spiral the advancing of first end to the second end from sampling cavity, and the sample that tested object 108 carries is thus transferred near the second end by tornado air-flow. Should be appreciated that, first end and the second end are only in order to distinguish the two ends of sampling cavity, instead of restriction order or importance etc. are in all senses.

According in an embodiment of the present utility model, be distributed on cabinet sidewall and rolling screen door on eddy flow boot disk 105 just form full circle shape, inflation entrance 106 is arranged on eddy flow boot disk 105, as shown in Figure 4. The inwall of eddy flow boot disk 105 forms a part for sampling cavity inner wall, its shape of cross section is formed as taper as shown in Figure 1, together with other parts of inwall of the inwall of eddy flow boot disk 105 and sampling cavity, form frusto-conical shape thus, the small diameter circular end of conical butt inwall is near the first end of cavity, and the large-diameter circular end of conical butt inwall is near the second end. Sampling cavity can be other form, and for example more parts or cavity inner wall form frustoconical, and smaller diameter end is first end, and larger diameter end is the second end.

Darkroom forms rear inflator pump 112, aspiration pump 114 is started working, and inflator pump 112 is filled with gas and in sampling cavity, inflates by inflation entrance 106 through gas ducting 109. Inflation entrance 106 is arranged to inflate the axial admission direction of entrance 106 and the inner surface of cavity inner wall and approaches tangently, and the axial admission direction of inflation entrance 106 is oblique to sample export inclination. The air-flow that whirl hole 106 eddy flow boot disk 105 is discharged forms swirling eddy, in inflator pump 112, aspiration pump 114, sampling asepwirator pump 126 these three bursts of strength, under effect, forms sampling cyclone within the scope of darkroom.

According to an embodiment of the present utility model, the wind guide chamber 110 that heating rod 122 and muff 111 and muff 111 are protected is set in the cabinet sidewall of rays safety detection apparatus. Wind guide chamber can be sampling cavity. Cyclone or spout air-flow are at the wind guide chambers 110 of heated rod 122 heating and 111 insulations of insulation cover and gas ducting is heated forms hot cyclone, and the powerful act of sucking of cyclone can be by sticking to the effumability filling in the solid granule sample on tested row bag 108 surfaces or row bag, the gaseous sample that half volatile article discharge picks up. In addition, hot cyclone is conducive to promote the quick volatilization of effumability, the violated sample of volatile in row bag or depart from bag, is conducive to sample collection and instrument and detects. The test sample being picked up by hot cyclone passes rapidly the heating filter screen 115 being arranged in wind guide chamber 110 inner spaces under spout wind action, and is heated by the heating filter screen 115 of tool high temperature rapidly. Net 115 is considered in heating can stop that large particulate matter enters on the one hand, prevent line clogging, on the other hand, the sample of being rolled by cyclone can be heated, especially can carry out heat temperature raising to solid granular sample rapidly and make it part volatilization, the sample volatilizing can be with effumability sample together through pellicle 117 and enter and carry out analyzing and testing in absorber, detector.

Under the effect of aspiration pump 114, thermal current is discharged through pump-line 113, and hot gas does not form convection current with heating filter screen 115 belows, can avoid hot threat by the tested row bag of effective guarantee. The gas that effumability sample in tested row bag volatilizes can directly enter top funnel lid 119 spaces through bottom clamping net 116, pellicle 117, top clamping net 118 through heating filter screen 115 is rear, not volatile solid is infected with sample can volatilize portion gas sample under heating filter screen 115 rapid heat effect, and the gaseous sample volatilizing can pass bottom clamping net 116, pellicle 117, top again and clamp net 118 and enter top funnel lid 119 spaces. Be provided with pellicle 117 at heating net and funnel top cover bottom, pellicle 117 adopts two wire netting clampings, can be used on the one hand pellicle 117 fixing, also can prevent that on the other hand pellicle 117 is torn under powerful cyclone effect. The material that semipermeable membrane material is passed through for selective filter. Semipermeable membrane material can stop other foreign-matter contaminations such as hydrone, amino molecule in inhaling air loading matter to enter, thereby pollutes chromatographic column or the migration tube of rear end, and pellicle 117 also can limit the resolution ratio of the formation raising instrument of cluster in addition. This design of wind guide chamber can make instrument can realize the sampling to volatility, half volatile and surface contamination simultaneously, has widened selective to detection material.

According to an embodiment of the present utility model, be provided with heating and thermal insulation system at sample collection pipeline, can effectively prevent from sucking the pipeline that the condensation of sample even causes by condensation and pollute.

The sample arriving in top funnel lid 119 spaces arrives pre-concentration sampling absorber through sample collection tube connector 120, sample collection interface 124 in filler cap with the mixed effect that is incorporated in sampling asepwirator pump 126 of sampling carrier gas flowing into from sampling carrier gas interface 139. Adopt full-time pre-concentration sampling absorber, can realize the full-time collection to sample, can greatly improve the detection efficiency of instrument.

First the sampling carrier gas mist that comprises sample is transferred into sample processing system. Sample processing system is for concentrating sample and resolve sample. Sample processing system comprises pre-concentration sampling absorber, comprises for the absorption screen drum of concentrating sample and the piston rod for the sample of absorption screen drum is sent by piston; Analyse chamber with pyrolysis, at high temperature separating out the sample of absorption screen drum, and use suitable carrier gasses and sample mix.

The mist that comprises sample is sent to the absorption screen drum 130 of pre-concentration sampling absorber and is adsorbed by the adsorbent in screen drum. Sample collection tube connector 120 is coated with sample collection tube connector heating and thermal insulation cover 121, and heating and thermal insulation cover can maintain high temperature in pipe, can effectively prevent that sample from polluting pipeline at in-tube condensation. Under the continuous action of sampling asepwirator pump 126, can realize the enrichment of sample in absorption screen drum 130 concentrated.

After sample concentration completes, the piston rod 129 of piston type absorber can be rapidly under motor effect be pushed into the pyrolysis with high temperature by absorption screen drum 130 analyses in chamber 132, and preferred pyrolysis is analysed chamber and adopted the stainless steel of stable chemical nature or nickel-clad copper material to make. Preferably, pre-concentration sampling absorber comprises two or more absorption screen drums, correspondingly, comprises multiple piston boits.

Being attracted to the pyrolysis at high temperature of sample on adsorbent analyses in chamber and is separated out rapidly, and brought in MCC post 136 and carry out pre-separation by carrier gas after mixing with the carrier gas through preheating flowing into from carrier gas inlet 134, after pre-separation completes, enter again in double mode ionic migration spectrometer 138 and detect analysis. Adopt double mode transference tube technology, can realize the ion of positive-negative polarity material is carried out to online detection of while, can improve the detection efficiency of instrument.

Preferably, piston cylinder 128, thermal conductivity factor that absorption screen drum lower thermal barrier pad 131 adopts poor such as polytetrafluoro, PEEK material, in sample adsorption process, can effectively completely cut off pyrolysis and analyse the heat conduction between chamber 132 and absorber, be conducive to sample and adsorb.

Pyrolysis is analysed chamber 132 and is provided with carrier gas and shunts/purge interface 135, and in the time that MCC post 136 cannot receive biased sample gas completely, biased sample gas is from shunting/purge interface 135 to discharge; In addition, open shunting/purging interface 135 completely and can analyse chamber 132 to pyrolysis and purge, can discharge side in sample or impurity, can effectively reduce the appearance of ghost peak in sub-sampling process. Analyse the glass bushing pipe 133 of the interior sealing embedding in chamber 132 stable chemical nature in pyrolysis simultaneously, bushing pipe 133 can regularly replace, can ensure that on the one hand sample gas contact, reacts the detection sample that also causes thus and the distortion of detection signal with metal material, also can stop that on the other hand large particulate matter falls into chromatographic column and stop up chromatographic column.

According to embodiment of the present utility model, heating filter screen 115 is set not only can be realized sample heating is especially realized solid granular sample is heated, make it to volatilize portion gas and see through pellicle 117, can also prevent that in addition large granular impurity from entering and blocking pipe. Pellicle 117 can effectively stop other foreign-matter contaminations such as hydrone, amino molecule in inhaling air loading matter to enter, and has effectively prevented the pollution of chromatographic column or migration tube, and the formation that simultaneously also can limit cluster improves the resolution ratio of instrument.

According to embodiment of the present utility model, in sampling and sample introduction resolving, high temperature resistant O-ring seals can effectively ensure being tightly connected between piston type absorber and piston cylinder 128, can guarantee sample collection efficiency and sample introduction analyzing efficiency. Heat conduction sheath 137, on the one hand for the protection of MCC136, is also analysed chamber 132 for MCC provides with pyrolysis on the other hand, and the sealed interface connecting between double mode ionic migration spectrometer 138, also helps external heat thermal circuit simultaneously MCC is carried out to heating and thermal insulation.

Be pushed to pyrolysis until sample and analyse chamber when carrying out pyrolysis and analysing, rolling screen door is opened, conveyer belt 103 is worked, first tested row bag (A) is sent out from detector gate outlet, another tested row bag (B) is entered to darkroom from conveyer belt 103 porch more simultaneously, x ray generator goes out bundle, and L shaped detector array receives Transmission X ray signal, then forms image through electronics part, image processing section. In the time that row bag enters darkroom just completely, rolling screen door is closed again, and cyclone sampling system forms, and starts sampling, and so circulation realizes full-time collection and the detection of multiple inspected object.

The method that uses darkroom formula rays safety detection apparatus to check tested object is described below according to embodiment of the present utility model. Method comprises sample collection step, sample treatment step and sample detection step substantially.

First be sample collection. tested luggage is positioned on the conveyer belt 103 of rays safety detection apparatus, conveyer belt 103 is sent to tested luggage behind darkroom, before darkroom by infrared induction control folding, back door transfers closed condition to by opening and conveyer belt 103 slows down or shuts down, be positioned at whirl hole darkroom surrounding and that arrange by spirality under air pump effect to tested luggage blow (blast can regulate control as required), be positioned at the sampling vacuum noz(zle) of darkroom center of top and the pump-line of darkroom top-side under high power air pumping action from darkroom draw gas, under this three's synergy, form cyclone. adhesion be expert at gas that the volatile material carried secretly in the surperficial solid granule shape sample of bag or row bag volatilizees/discharge under spout wind action through heating net heated, granular solids sample volatilizes portion gas and can together pass pellicle 117 with escaping gas sample through heating, and suck in the full-time pre-concentration adsorbent chamber of piston type that adsorbent is housed and carry out sample absorption by the asepwirator pump of sampling from the sampling conduit through heating and thermal insulation, two piston type absorbers are used alternatingly the full-time interleaved collection that can realize sample, sampling asepwirator pump continues air-breathing sampling can realize sample concentration.

Sample treatment and detection: even concentrated absorption on the piston type absorber absorption screen drum that has a sample is pushed into rapidly to pyrolysis and analyses in chamber, the sample being adsorbed on adsorbent is separated out rapidly under high temperature action, the sample of separating out flows into bottom parsing chamber and mixes rapidly and brought into and analyze test section (MCC and IMS) by carrier gas through the chromatogram carrier gas of preheating, completes parsing sample introduction.

According to embodiment of the utility model, darkroom of the present utility model formula rays safety detection apparatus is made up of an overall chassis body. chassis body can mainly comprise feed belt, casing, wind guide chamber, cavity muff, be distributed in cabinet entrance conveyer belt 103 and outlet rolling screen door conveyer belt 103 positions and that eddy flow boot disk is installed at sidewall, the eddy flow boot disk 105 that cabinet two bottom sides is installed, be embedded in the conveyer belt facing 104 of conveyer belt 103 both sides, exhausting hole, cabinet top, inflator pump 112, aspiration pump 114, gas ducting, pump-line, heating filter screen, sample collection pipeline, wind guide chamber, pellicle 117 and hold assembly thereof, top funnel lid etc. described feed belt is by variable speed electric motors, particularly control, and conveyer belt 103 is crossed darkroom for transmitting tested row free clothing, and tested luggage is positioned on feed belt, and belt can be sent to tested luggage in darkroom. when the infrared induction system on the cabinet sidewall of detector gate entry position, main frame side of being arranged on detects tested luggage and just enters into cabinet inside completely, reducing motor reduces speed now or shuts down operation (conveyer belt slows down or stops), the rolling screen door that is distributed in rays safety detection apparatus detector gate entrance and exit place hangs down, and whole chassis body forms airtight darkroom. x-ray detection device scans and shows tested object 108 scan images tested object 108, thereby checks whether tested object 108 inside comprise violated thing, determines the position of tested object 108 simultaneously. when tested object 108 arrives after desired locations, can implement tested object 108 further to check. the eddy flow boot disk 105 that is positioned at cabinet both sides forms full circle just with the eddy flow boot disk 105 being positioned in the rolling screen door of front and back, the whirl hole that multi-turn in eddy flow boot disk 105 is pressed spiral circular arrangement also forms just, inflator pump 112, aspiration pump 114, sampling asepwirator pump is all started working, inflator pump 112 gases are discharged from the whirl hole of arranging by spirality that is positioned at cabinet bottom along cabinet housing pipeline, and form spirality wind, the aspiration pump 114 and the sampling asepwirator pump 126 that are positioned at cabinet top will draw in the helical flow continuation of formation, form powerful cyclone, stick to the solid sample granule on luggage surface, or the trace gas of volatile substances volatilization in baggages passes the heating filter screen on wind guide chamber top under the powerful act of sucking of cyclone cyclone center, the gaseous sample of volatile substances can be directly through pellicle 117 under the effect of cyclone air-flow, arrive absorber from the sample collection pipeline through heating and thermal insulation again and carry out sample absorptive collection. and the adhesion being picked up by the cyclone surperficial solid granule shape sample of bag of being expert at can first be heated rapidly and be volatilized portion gas sample between heating filter screen and pellicle 117, the gaseous sample volatilizing is again by pellicle 117, arriving absorber through the sample collection pipeline of heating and thermal insulation again adsorbs, solid particle residue will be by the powerful sucking-off of aspiration pump 114, to prevent that pipeline from polluting or affecting the detection of next line bag. wherein, described inflator pump 112 and aspiration pump 114, be used to providing of cyclone to continue the wind-force circulating. the power of inflator pump 112 can be selected as required, and due to the gas enlarging function of cyclone, the flow velocity of aspiration pump 114 should be the more than 10 times of inflator pump 112, thereby inhales thing sampling to form negative pressure. the air stream being filled with for fear of inflator pump 112 causes interference to the sampling composition of sucking from sampled targets, the air-source distance samples target that inflator pump 112 can be gathered is on the one hand far away as far as possible, the flexible conduit turning to as available flexible spaces out air pump and sampling stomidium, can carry out filtration, purification to the air that enters inflator pump 112 on the other hand, avoid gas cross to pollute, improve the sensitivity of the location sampling of sampling instrument. wherein, described wind guide chamber can be heated, described cavity muff can to whole wind guide chamber cavity and between wind guide chamber and muff gas ducting be incubated, conventionally the temperature in wind guide chamber or darkroom can be set to higher than 10～20 degrees Celsius of room temperatures, ensure on the one hand safety, also can promote on the other hand the quick volatilization of effumability in tested row bag or volatile prohibited items, be conducive to sample collection. wherein, be provided with specially conveyer belt facing 104 in described conveyer belt 103 both sides, adopt dense planting bristle in facing 104 and the contact site of conveyer belt 103, facing 104 and bristle can effectively ensure in cyclone sampling process that darkroom can seal in the best condition and prevent that mass air flow from deriving from belt bottom and leak and exert an influence to detecting. wherein, described pellicle 117 adopts two wire netting clampings, can be used on the one hand pellicle 117 fixing, also can prevent that on the other hand pellicle 117 is torn under powerful cyclone effect. described pellicle 117 can stop other foreign-matter contaminations such as hydrone, amino molecule in inhaling air loading matter to enter, and has effectively prevented the pollution of chromatographic column or migration tube, and the formation that simultaneously also can limit cluster improves the resolution ratio of instrument.

According to an embodiment of the present utility model, described sample collection tube connector adopts fluorubber or the polyfluortetraethylene pipe of metal or stable chemical nature, tube wall is provided with heating film and heat-preservation cotton, in the whole process of sample collection, sample collection connecting pipe all keeps higher temperature (100～250 DEG C), can effectively stop in sample collection process sample and be condensate in and on inner-walls of duct, cause sample to lose or pipeline pollutes.

According to an embodiment of the present utility model, described full-time pre-concentration sampler mainly comprises bitubular piston cylinder, and piston type absorber, for the high temperature resistant O-ring seals of packed-piston cylinder and piston type absorber. Preferably, described bitubular piston cylinder adopts that heat-insulating property is good, polytetrafluoro or the PEEK material of good mechanical property and stable chemical nature make. Described high temperature resistant O sealing ring, for forming sealing by piston cylinder and piston type absorber. Described piston type absorber mainly comprises the piston body of rod that is positioned at absorber top, is positioned at the absorber screen drum at middle part and is positioned at the mat insulation of absorber bottom. Preferably, piston rod employing polytetrafluoro is made, and adopts motor to drive, and in the time of sample collection and sample introduction parsing, electrode can be analysed sealing slip in chamber at piston cylinder and pyrolysis by driven plunger formula absorber. Described absorption screen drum, the preferred inert metal that adopts stable chemical nature is made, adsorbent can be placed in the screen drum inside of hollow, and sorbent material diameter should be greater than screen drum outer wall bore dia, and sorbent material can be selected to add by user's main detection target as required. Described mat insulation, preferably adopts heat-insulating property good, the polytetrafluoro material of stable chemical nature, and mat insulation can effectively completely cut off pyrolysis and analyse the heat exchange between chamber and absorption screen drum, is conducive to sample Adsorption Concentration. Mat insulation adopts spiral to be connected with absorption screen drum, and this connected mode is conducive to the replacing of mat insulation and the replacing of sorbent material. In testing process, two piston type absorbers are used alternatingly the full-time absorption that can realize sample, have improved the detection efficiency of instrument.

According to an embodiment of the present utility model, chamber is analysed in described pyrolysis, outside chamber, be covered with heating film, can heat cavity, the additional hotting mask in chamber outside is coated with heat-preservation cotton simultaneously, can be incubated cavity, temp probe is also installed on cavity, can carry out Real-Time Monitoring and control to cavity temperature by outside temperature control circuit. Chamber is analysed in described pyrolysis and above-mentioned pipeline heating system all adopts temperature programming pattern, can effectively reduce power consumption. While resolving sample introduction, motor drives one of them absorption the concentrated piston type absorber that has a sample to be pushed into rapidly the pyrolysis with high temperature from piston cylinder and analyses in chamber, the piston type absorber that simultaneously drives another to resolve sample introduction and to complete detection is extracted, and prepares the sample adsorbent of next tested row bag concentrated. The sample being adsorbed on the piston type absorber that is pushed rapidly pyrolysis and analyse chamber is separated out by moment under hot conditions, and with analyse the carrier gas that bottom, chamber flows into from pyrolysis and mix, be then brought into chromatographic column and carry out pre-separation, then detect to IMS.

According to the utility model embodiment, select to use little, the post of volume effect porous mouth capillary column (MCC) high and that separating rate is fast can overcome the conventional capillary tube column analysis time long (10～15 minutes) but also need a bulky burner hearth realize the problem that high temperature is difficult to the needs that meet field quick detection.

According to embodiment of the present utility model, temperature control system comprises heating system, heat-insulation system, temp probe and temperature-control circuit, be mainly used in to sample collection tube connector, wind guide chamber, heating filter screen, pyrolysis analyse that chamber, chromatographic column and transference tube heat, insulation and temperature control; Preferably, chamber and the heating of migration tube part employing heating film are analysed in sample collection pipeline, pyrolysis; Wind guide chamber adopts heating blanket heating or heating rod heating; Heating net adopts has the fast heater strip Fast Heating of firing rate. Preferably, described heat-insulation system, adopts heat-preservation cotton, be mainly used in coordinating temperature control system be each temperature control device through row heat-insulation and heat-preservation, on the one hand can reduce the parts different parts temperature difference, improve accuracy of detection; Can reduce on the other hand overall energy resource consumption.

According to embodiment of the present utility model, ionic migration spectrometer is positive and negative double mode, adopt positive and negative double mode ionic migration spectrometer to realize to volatilize in tested row bag the ion of positive-negative polarity material to carry out online detection of while, comparing to monotype switches without electric field, shorten detection duration, improved detection efficiency; In addition, described migration tube adopts resistant to elevated temperatures ceramic material, has widened greatly the scope that can detect sample.

Although with reference to exemplary embodiments of the present utility model, specifically illustrate and described the utility model, but those of ordinary skill in the art are to be understood that, in the case of not departing from the spirit and scope of the present utility model that claims limit, can carry out the multiple change in form and details to these embodiment.

Claims (11)

1. a darkroom formula rays safety detection apparatus, is characterized in that, described darkroom formula rays safety detection apparatus comprises the housing in darkroom and the parts of enclosure interior that formation is airtight, and the parts of enclosure interior comprise:

Sampling system, sampling system comprises in order to tested object being sent to conveyer in sample collecting apparatus from the external world, detect tested object position x-ray detection device and for the sample collecting apparatus of collected specimens, wherein x-ray detection device is for determining the position of tested object in sampling system, to tested object is sent to the position of expectation together with conveyer;

Sample processing system, for concentrating sample and parsing sample; With

Specimen inspection system, detects sample composition by gas-chromatography-ionic migration spectrometer or independent ionic migration spectrometer;

Wherein, sampling system, sample processing system and specimen inspection system are communicated with by connector, make to be admitted to tested object in the housing that forms airtight darkroom and complete in housing collection, processing and the detection of sample.

2. darkroom as claimed in claim 1 formula rays safety detection apparatus, it is characterized in that, x-ray detection device comprises launching the x ray generator of X ray, detector and display unit for detecting x-ray, and x-ray detection device shows the inclusion of checking matter inside for surveying the residue X ray penetrating after tested object to show the position of tested object in sampling system simultaneously.

3. darkroom as claimed in claim 1 formula rays safety detection apparatus, it is characterized in that, the conveyer of sampling system comprises conveyer belt and conveyer belt facing, the both sides of the edge of conveyer belt and conveyer belt facing are configured to fit structure, make conveyer belt facing allow conveyer belt to move and form hermetically-sealed construction with conveyer belt under the motionless state of conveyer belt.

4. darkroom as claimed in claim 3 formula rays safety detection apparatus, is characterized in that, conveyer belt facing is formed by deformable material, under the motionless state of conveyer belt, in the housing due to darkroom, forms negative pressure, and the distortion of conveyer belt facing forms sealing with conveyer belt.

5. darkroom as claimed in claim 1 formula rays safety detection apparatus, it is characterized in that, sample collecting apparatus comprises sampling cavity, sampling cavity has first end and second end relative with first end, wherein said conveyer is positioned at first end, and sampling cavity also comprises near the sample export of the discharge sample of the second end;

Wherein, sampling cavity also comprises inflation entrance and the exhaust outlet of the wall that is positioned at sampling cavity, inflation entrance is configured to be blown into air-flow in sampling cavity, exhaust outlet is configured to Exhaust Gas, to form tornado air-flow in sampling cavity together with inflation entrance, described tornado air-flow is along spiral the advancing of first end to the second end from sampling cavity, and the sample that tested object carries is thus transferred near the second end by tornado air-flow.

6. darkroom as claimed in claim 5 formula rays safety detection apparatus, is characterized in that, inflation entrance is arranged to inflate the axial admission direction of entrance and the inner surface of cavity inner wall and approaches tangently, and the axial admission direction of inflation entrance is oblique towards sample export inclination.

7. darkroom as claimed in claim 5 formula rays safety detection apparatus, it is characterized in that, the inwall of sampling cavity is formed frusto-conical shape at least partly, and the small diameter circular end of conical butt inwall is near the first end of cavity, and the large-diameter circular end of conical butt inwall is near the second end.

8. darkroom as claimed in claim 7 formula rays safety detection apparatus, it is characterized in that, sampling system comprises heating filter screen, for sample from first end in the time that the second end transmits to sample filtering, can heat tested object with the sample volatilization that helps tested object and carry simultaneously or depart from tested object.

9. darkroom as claimed in claim 1 formula rays safety detection apparatus, is characterized in that, sampling system comprises that pellicle is for selective filter sample, and pellicle is separated out the space for mixing with carrier gas in sampling cavity.

10. darkroom as claimed in claim 1 formula rays safety detection apparatus, is characterized in that, sample processing system comprises pre-concentration sampling absorber, comprises for the absorption screen drum of concentrating sample and the piston rod for the sample of absorption screen drum is sent by piston; With

Chamber is analysed in pyrolysis, at high temperature separating out the sample of absorption screen drum, and uses suitable carrier gasses and sample mix.

11. darkroom as claimed in claim 1 formula rays safety detection apparatus, is characterized in that, specimen inspection system comprises porous capillary post and the ionic migration spectrometer for pre-separation sample.