CN109406253A - Particulate matter pre-concentration method and device for security protection detection field - Google Patents
Particulate matter pre-concentration method and device for security protection detection field Download PDFInfo
- Publication number
- CN109406253A CN109406253A CN201811513793.1A CN201811513793A CN109406253A CN 109406253 A CN109406253 A CN 109406253A CN 201811513793 A CN201811513793 A CN 201811513793A CN 109406253 A CN109406253 A CN 109406253A
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- China
- Prior art keywords
- particulate matter
- insulation board
- air
- security protection
- thermal insulation
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/40—Concentrating samples
- G01N1/4022—Concentrating samples by thermal techniques; Phase changes
Abstract
The present invention provides a kind of particulate matter pre-concentration methods and device for security protection detection field, and this method carries out enrichment concentration to the particulate matter for the harmful influence that stripping gets off from the person in security protection detection field, for improving the detection sensitivity of trace detection technology；Heater and loading screen are fixed in the sealing space to be formed by the device, during harmful influence particulate matter on the particulate matter stripping device stripping person of front end, the air-flow for carrying harmful influence particulate matter is set to pass through loading screen, particulate matter was trapped on loading screen within this time, then sample introduction valve is simultaneously closed off, sample output valve door and blower, heater makes loading screen be rapidly heated to certain temperature, make the particulate matter being trapped thereon evaporation gasification, detect clean gas the sample delivery that gasification is evaporated in sealing space into detection device with certain flow rate.The present invention solves the problems, such as the trace detection of the harmful influences such as the following explosive of pptv concentration, drugs, to realize at security protection scene to the quick, real-time of harmful influence entrained by human body, on-line checking.
Description
Technical field
The present invention relates to security protection detection fields, pre- dense more particularly, to a kind of particulate matter for security protection detection field
Contracting method and apparatus.
Background technique
In security protection detection field, the detection to harmful influences such as explosive, drugs is major tasks, in particular for explosion
The detection of object is even more the most important thing.Nearly ten years, the attack of terrorism takes place frequently and diffusion tendency is constantly presented in world wide, gives
Countries in the world cause great fear, make the security of the lives and property of the people by great threat and loss；Wherein, probably
The large-scale public place that fear molecule carrying explosive/explosive enters stream of people's aggregation takes " suicide terrorist attacks " to have become one kind
Important failure mode.
To the detection technique of explosive, there are mainly three types of types: block detection technique, trace detection technology and biology at present
Detection technique.Block detection technique can be divided into imaging detecting method (such as X-ray machine, CT machine) for blocky or liquid explosive
With core detection method (such as neutron detection technology), for human body carry explosive, for the healthy and safe and humanity master to the public
Justice considers, is forbidden to use imaging detecting method in world wide and core detection method detects human body, and can only be to luggage and articles
It is detected.Most widely used in Measurement for Biotechnique is canid sniff, but the explosive that canid energy sniff goes out
Type is limited, and the influence vulnerable to weather, environment, occasion, is restricted its application.The explosive that human body carries would generally be by
Terrorist is sealed shielding processing, and since the saturated vapor pressure of most of explosives at normal temperatures and pressures is all very low,
The large-scale public places such as station, airport, it is dense that the explosive molecule evaporateing into air can be diluted to volume because of air circulation
Ppbv even pptv magnitude is spent hereinafter, directlying adopt trace detection technology (such as ion mobility spectrometry, chemoluminescence method, Raman spectrum
Method, terahertz light spectrometry, mass spectrography etc.) it is difficult to detect the explosive molecule of such low concentration.Therefore it needs in detection device
Front end installs pre-concentration device, the explosive particle adhered on the enrichment method person, to improve detection sensitivity additional.
Summary of the invention
For the defects in the prior art, the object of the present invention is to provide a kind of particulate matter for security protection detection field is pre-
Method for concentration and device.
A kind of particulate matter pre-concentration device for security protection detection field provided according to the present invention, comprising: inlet side is exhausted
Listrium, inlet side thermal insulation board, air side insulation board, air side thermal insulation board, desorption air-intake device, be desorbed out sampling device, heater,
Loading screen；
The inlet side insulation board, inlet side thermal insulation board, air side insulation board, air side thermal insulation board, desorption air-intake device,
Sampling device is desorbed out to be connected and sealed, the heater and loading screen are fixed on and are formed by sealing space.
Preferably, comprising: sample introduction valve, front end particulate matter stripping device, sample output valve door, blower；
One end of the sample introduction valve and the front end particulate matter stripping device are tightly connected, the sample introduction valve it is another
End is tightly connected with the inlet side insulation board；
One end of the sample output valve door and the air side insulation board are tightly connected, the other end of the sample output valve door and institute
State blower sealed connection.
Preferably, comprising: sample solenoid valve, detection device is desorbed out in desorption air inlet solenoid valve, gas source；
One end of the desorption air inlet solenoid valve and the desorption air-intake device are tightly connected, and the desorption enters the wind solenoid valve
The other end and conveying clean gas the gas source be tightly connected；
Described one end that sample solenoid valve is desorbed out and the sampling device that is desorbed out are tightly connected, described that sample solenoid valve is desorbed out
The other end and the detection device be tightly connected.
Preferably, the loading screen is folded into accordion pleated；The heater be temp auto-controlled or temperature adjustable, can
The loading screen is heated to required temperature, makes the particulate matter retained on loading screen evaporation gasification.
Preferably, the inlet side insulation board and inlet side thermal insulation board are split type, inlet side insulation board and inlet side
Thermal insulation board plays insulation and heat-blocking action using different function material respectively；
Alternatively, the inlet side insulation board and inlet side thermal insulation board be integral type, inlet side insulation board and inlet side every
Hot plate constitutes inlet side partiting thermal insulation integrated board, plays insulation and heat-blocking action simultaneously using functional material of the same race.
Preferably, the air side insulation board and air side thermal insulation board are split type, air side insulation board and air side
Thermal insulation board plays insulation and heat-blocking action using different function material respectively；
Alternatively, the air side insulation board and air side thermal insulation board be integral type, air side insulation board and air side every
Hot plate constitutes inlet side partiting thermal insulation integrated board, plays insulation and heat-blocking action simultaneously using functional material of the same race.
Preferably, the blower can Positive work and antiport, for guiding particulate matter air-flow when Positive work
By loading screen with trapped particles object, when antiport, cleans loading screen for purging loading screen.
A kind of particulate matter pre-concentration method for security protection detection field provided according to the present invention, which is characterized in that benefit
Particulate matter pre-concentration is carried out with the above-mentioned particulate matter pre-concentration device for security protection detection field.
Preferably, the concentration of harmful influence particulate matter is carried out, wherein described.Harmful influence includes drugs.
Preferably, during harmful influence particulate matter on the particulate matter stripping device stripping person of front end, while institute is opened
Sample introduction valve, sample output valve door and blower certain time are stated, makes the air-flow for carrying harmful influence particulate matter by loading screen, particulate matter exists
It is trapped in this time on loading screen, then simultaneously closes off sample introduction valve, sample output valve door and blower, heater makes to carry
Object screen is rapidly heated to preset temperature, make the particulate matter being trapped on loading screen evaporation gasification, be then turned on gas source, be desorbed into
Wind-powered electricity generation magnet valve and sample solenoid valve is desorbed out, the particulate matter conveying of gasification will be evaporated in sealing space with clean gas to set flow velocity
It is detected into detection device.
Compared with prior art, the present invention have it is following the utility model has the advantages that
The present invention solves the problems, such as the trace detection of the harmful influences such as the following explosive of pptv concentration, drugs, to realize in security protection
Scene is to the quick, real-time of the harmful influences such as explosive, drugs entrained by human body, on-line checking.
Detailed description of the invention
Upon reading the detailed description of non-limiting embodiments with reference to the following drawings, other feature of the invention,
Objects and advantages will become more apparent upon:
Fig. 1 is the overall workflow of security protection detection involved in the present invention；
Fig. 2 is the schematic diagram of the bright involved particulate matter pre-concentration method of this law；
Fig. 3 is the structure chart of particulate matter pre-concentration device involved in the present invention；
Fig. 4 is the explosive view of particulate matter pre-concentration device involved in the present invention:
It is shown in figure:
Specific embodiment
The present invention is described in detail combined with specific embodiments below.Following embodiment will be helpful to the technology of this field
Personnel further understand the present invention, but the invention is not limited in any way.It should be pointed out that the ordinary skill of this field
For personnel, without departing from the inventive concept of the premise, several changes and improvements can also be made.These belong to the present invention
Protection scope.
As described below is a preferred embodiment (insulation board and thermal insulation board are split type) of the invention, does not therefore limit this
The protection scope of invention.In change case, insulation board and thermal insulation board can use integral structure.
Refering to fig. 1, the overall workflow of security protection detection involved in the present invention is as follows: by the harmful influence particulate matter on the person
After stripping gets off, enrichment concentration is carried out by particulate matter pre-concentration device, then by the sample delivery after concentration to detection device into
Row detection.
Referring to Fig.2, the present invention provides a kind of particulate matter pre-concentration method for security protection detection field, specific method is such as
Under: during harmful influence particle on the stripping person, while sample introduction valve, sample output valve door and blower certain time are opened, made
The air-flow of harmful influence particle is carried by loading screen, particulate matter is trapped on loading screen within this time, then closes simultaneously
Sample introduction valve, sample output valve door and blower are closed, heater makes loading screen be rapidly heated to certain temperature, makes to be trapped thereon
Particulate matter desorption evaporation gasification is then turned on gas source, desorption air inlet solenoid valve and sample solenoid valve is desorbed out, with clean gas with one
Constant current speed detects the sample delivery of desorption evaporation gasification in sealing space into detection device.The blower can be realized just
Inverted running, can reverse blow loading screen with to loading screen carry out cleaning treatment.
Refering to Fig. 3 and Fig. 4, the present invention provides a kind of particulate matter pre-concentration side device for security protection detection field, tool
Body scheme is as follows: heater 6 clamps loading screen 5 from two sides, and inlet side thermal insulation board 201 and air side thermal insulation board 202 will heat
Device 6 is coated and is held tightly, and inlet side insulation board 101 and air side insulation board 102 are connected to inlet side thermal insulation board 201 and outlet air
On side thermal insulation board 202, inlet side insulation board 101, inlet side thermal insulation board 201, heater 6, loading screen 5, air side insulation board 102
Holding fixation is carried out by fixing piece with air side thermal insulation board 202；Desorption inlet duct 3 is connected to air inlet insulation board 101 and air inlet
On insulation board 102；Sampling device 4 is desorbed out to be connected on air inlet insulation board 101 and air inlet insulation board 102；Inlet side insulation board 101
It is connect with sample introduction valve 7, stripping device of the sample introduction valve 7 with front end for particulate matter on the stripping person is connect；Air side insulation
Plate 102 is connect with blower 9；Desorption air inlet 11 one end of solenoid valve is connect with gas source 10, and the other end passes through clean gas air inlet 13
It is connect with desorption inlet duct 3；12 one end of sample solenoid valve is desorbed out to connect by outlet 14 with sampling device 4 is desorbed out, it is another
End is connect with detection device.
Inlet side insulation board 101, inlet side thermal insulation board 201, air side thermal insulation board 202, air side insulation board 102, desorption
Inlet duct 3 and being desorbed out between sampling device 4 is tightly connected.
Inlet side insulation board 101 and sample introduction valve 7, air side insulation board 102 and blower 9, desorption air inlet solenoid valve 11 with
Gas source 10, desorption air inlet solenoid valve 11 and desorption inlet duct 3, are desorbed out sample solenoid valve 12 and are desorbed out between sampling device 4
It is tightly connected.
Loading screen 5 is using high temperature resistant, air penetrability height, easily forming, service life length, sintered metal fiber material easy to clean, folding
Qin pleated is built up, to increase the retention area of particulate matter.
Inlet side thermal insulation board 201 and air side the thermal insulation board 202 small, material resistant to high temperature using thermal coefficient.
Inlet side insulation board 101, air side insulation board 102 are desorbed inlet duct 3 and sampling device 4 are desorbed out using resistance to height
Warm insulating materials.
Heater 6 uses temp auto-controlled or temperature adjustable, and loading screen is heated rapidly to required temperature, makes retained thereon
Grain object evaporation gasification.
Blower 9 forward and reverse can operate, and guidance particulate matter air-flow passes through loading screen 5 when Positive work, and when antiport draws
Clean gas purging loading screen 5 cleans it.
The size of the particulate matter pre-concentration device changes according to the size of front end stripping device air flow rate, blower 9
Flow is also selected according to the size of front end stripping device air flow rate.
In the description of the present application, it is to be understood that term " on ", "front", "rear", "left", "right", " is erected at "lower"
Directly ", the orientation or positional relationship of the instructions such as "horizontal", "top", "bottom", "inner", "outside" is orientation based on the figure or position
Relationship is set, description the application is merely for convenience of and simplifies description, rather than the device or element of indication or suggestion meaning are necessary
It with specific orientation, is constructed and operated in a specific orientation, therefore should not be understood as the limitation to the application.
Specific embodiments of the present invention are described above.It is to be appreciated that the invention is not limited to above-mentioned
Particular implementation, those skilled in the art can make a variety of changes or modify within the scope of the claims, this not shadow
Ring substantive content of the invention.In the absence of conflict, the feature in embodiments herein and embodiment can any phase
Mutually combination.
Claims (10)
1. a kind of particulate matter pre-concentration device for security protection detection field characterized by comprising inlet side insulation board, into
Air side insulation board, air side thermal insulation board, desorption air-intake device, sampling device, heater, loading screen is desorbed out in wind side thermal insulation board；
The inlet side insulation board, inlet side thermal insulation board, air side insulation board, air side thermal insulation board, desorption air-intake device, desorption
Sampling device is connected and sealed out, and the heater and loading screen are fixed on and are formed by sealing space.
2. the particulate matter pre-concentration device according to claim 1 for security protection detection field characterized by comprising
Sample introduction valve, front end particulate matter stripping device, sample output valve door, blower；
One end of the sample introduction valve and the front end particulate matter stripping device are tightly connected, the other end of the sample introduction valve with
The inlet side insulation board is tightly connected；
One end of the sample output valve door and the air side insulation board are tightly connected, the other end and the wind of the sample output valve door
Machine is tightly connected.
3. the particulate matter pre-concentration device according to claim 1 for security protection detection field characterized by comprising
Sample solenoid valve, detection device is desorbed out in desorption air inlet solenoid valve, gas source；
One end of the desorption air inlet solenoid valve and the desorption air-intake device are tightly connected, described that the another of air inlet solenoid valve is desorbed
The gas source of one end and conveying clean gas is tightly connected；
Described one end that sample solenoid valve is desorbed out and the sampling device that is desorbed out are tightly connected, described that the another of sample solenoid valve is desorbed out
One end and the detection device are tightly connected.
4. the particulate matter pre-concentration device according to claim 1 for security protection detection field, which is characterized in that the load
Object screen is folded into accordion pleated；The heater is temp auto-controlled or temperature adjustable, the loading screen can be heated to institute
Temperature is needed, the particulate matter retained on loading screen evaporation gasification is made.
5. the particulate matter pre-concentration device according to claim 1 for security protection detection field, which is characterized in that it is described into
Wind side insulation board and inlet side thermal insulation board be it is split type, inlet side insulation board and inlet side thermal insulation board use different function material
Insulation and heat-blocking action are played respectively；
Alternatively, the inlet side insulation board and inlet side thermal insulation board are integral type, inlet side insulation board and inlet side thermal insulation board
Inlet side partiting thermal insulation integrated board is constituted, insulation and heat-blocking action are played using functional material of the same race simultaneously.
6. the particulate matter pre-concentration device according to claim 1 for security protection detection field, which is characterized in that it is described go out
Wind side insulation board and air side thermal insulation board be it is split type, air side insulation board and air side thermal insulation board use different function material
Insulation and heat-blocking action are played respectively；
Alternatively, the air side insulation board and air side thermal insulation board are integral type, air side insulation board and air side thermal insulation board
Inlet side partiting thermal insulation integrated board is constituted, insulation and heat-blocking action are played using functional material of the same race simultaneously.
7. the particulate matter pre-concentration device according to claim 2 for security protection detection field, which is characterized in that the wind
Machine can Positive work and antiport, for guiding particulate matter air-flow by loading screen with trapped particles when Positive work
Object cleans loading screen for purging loading screen when antiport.
8. a kind of particulate matter pre-concentration method for security protection detection field, which is characterized in that appoint using in claim 1 to 7
Particulate matter pre-concentration device described in one for security protection detection field carries out particulate matter pre-concentration.
9. the particulate matter pre-concentration method according to claim 8 for security protection detection field, which is characterized in that endanger
The concentration of change product particulate matter, wherein described.Harmful influence includes drugs.
10. the particulate matter pre-concentration method according to claim 8 for security protection detection field, which is characterized in that preceding
It holds on the particulate matter stripping device stripping person during harmful influence particulate matter, while opening the sample introduction valve, sample output valve door
With blower certain time, make the air-flow for carrying harmful influence particulate matter by loading screen, particulate matter is trapped within this time
On loading screen, sample introduction valve, sample output valve door and blower are then simultaneously closed off, heater makes loading screen be rapidly heated to default
Temperature, make the particulate matter being trapped on loading screen evaporation gasification, be then turned on gas source, desorption air inlet solenoid valve and be desorbed out sample
The particulate matter that gasification is evaporated in sealing space is transported in detection device with clean gas with to set flow velocity and is examined by solenoid valve
It surveys.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811513793.1A CN109406253A (en) | 2018-12-11 | 2018-12-11 | Particulate matter pre-concentration method and device for security protection detection field |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811513793.1A CN109406253A (en) | 2018-12-11 | 2018-12-11 | Particulate matter pre-concentration method and device for security protection detection field |
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| Publication Number | Publication Date |
|---|---|
| CN109406253A true CN109406253A (en) | 2019-03-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811513793.1A Pending CN109406253A (en) | 2018-12-11 | 2018-12-11 | Particulate matter pre-concentration method and device for security protection detection field |
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| US6978657B1 (en) * | 1999-06-23 | 2005-12-27 | Sandia Corporation | Portable chemical detection system with intergrated preconcentrator |
| CN1791351A (en) * | 2003-05-15 | 2006-06-21 | Bsh博施及西门子家用器具有限公司 | Vacuum cleaner comprising cleaning device for ceramic filters that is operated by compressed air |
| US20070224087A1 (en) * | 2004-07-08 | 2007-09-27 | Zhong Ding | Airborne material collection and detection method and apparatus |
| CN204116106U (en) * | 2014-09-04 | 2015-01-21 | 哈尔滨师范大学 | Corrosive gas monitoring sampler |
| CN108459069A (en) * | 2017-11-27 | 2018-08-28 | 上海裕达实业有限公司 | A kind of detection device for safety-security area |
-
2018
- 2018-12-11 CN CN201811513793.1A patent/CN109406253A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6978657B1 (en) * | 1999-06-23 | 2005-12-27 | Sandia Corporation | Portable chemical detection system with intergrated preconcentrator |
| CN1791351A (en) * | 2003-05-15 | 2006-06-21 | Bsh博施及西门子家用器具有限公司 | Vacuum cleaner comprising cleaning device for ceramic filters that is operated by compressed air |
| US20070224087A1 (en) * | 2004-07-08 | 2007-09-27 | Zhong Ding | Airborne material collection and detection method and apparatus |
| CN204116106U (en) * | 2014-09-04 | 2015-01-21 | 哈尔滨师范大学 | Corrosive gas monitoring sampler |
| CN108459069A (en) * | 2017-11-27 | 2018-08-28 | 上海裕达实业有限公司 | A kind of detection device for safety-security area |
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Application publication date: 20190301 |
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