CN202853948U - Small onboard back-stepping flow cloud droplet sampling device - Google Patents
Small onboard back-stepping flow cloud droplet sampling device Download PDFInfo
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- CN202853948U CN202853948U CN 201220524270 CN201220524270U CN202853948U CN 202853948 U CN202853948 U CN 202853948U CN 201220524270 CN201220524270 CN 201220524270 CN 201220524270 U CN201220524270 U CN 201220524270U CN 202853948 U CN202853948 U CN 202853948U
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Abstract
The utility model relates to a small onboard back-stepping flow cloud droplet sampling device, comprising an air inlet cavity and a collection cavity, wherein the collection cavity is arranged inside the air inlet cavity; the front end of the air inlet cavity is connected with the outer edge of a sampling end of the collection end; an air inlet pipe is arranged at the tail part of the air inlet cavity; the collection cavity comprises a tubular sampling end, a pre-heating cavity and a tubular capturing end, which are sequentially connected; a micro-pore is arranged on the pipe wall of the tubular sampling end; a heating device is arranged around the outer wall of the pre-heating cavity; and an exhaust pipe is arranged at the tail part of the pre-heating cavity. The sampling device provided by the utility model can be used for collecting aerosol particles or cloud droplets with a large grain size. The sampling device provided by the utility model has the advantages of wide application range, less investment and convenience and rapidness of operation, has practical meaning, and can improve the feasibility and the practical applicability of an aviation sampling technology.
Description
Technical field
The utility model relates to the anti-plug-flow water dust of a kind of minitype airborne sampling apparatus, belongs to the technical field of Cloud physical chemistry sample devices and analysis.
Background technology
Along with day by day descending and the development of aeronautical technology of air quality, the researcher just begins one's study from the eighties and carry out aboard the method for atmospheric sampling mid-term both at home and abroad---the aviation Sampling techniques.The utilization of aviation Sampling techniques is conducive to understand the air quality situation in high-altitude and then the origin cause of formation of Pollution Study.At present, studies show that in a large number the aerosol particle of a large amount of industry and municipal pollution source emission can affect formation and the life-span of cloud, because the at present restriction of Sampling techniques, the large section of these problems is that observational data is inferred via satellite.Yet satellite mainly is the method induction demonstration large scale scope data by optics, the large and very difficult explanation gasoloid-cloud-rainfall of its accuracy error.Along with China's Cloud physics development, utilize aeronautical technology to obtain moisture content, weather data and cloud physics parameter etc. and can't satisfy the requirement of cloud physics pattern simulation.If further improve at aspects such as cloud physics and weather forecasts, also need to further investigate for gasoloid-cloud-rainfall transformation mechanism, therefore, further which type of aerosol particle transforms cloud tuberculosis and can effectively become water dust in the acquisition atmosphere.International atmospheric scientist uses the aircraft airborne device to collect upper atmosphere aerosol particle and water dust usually, then it is carried out online or lab analysis, obtains the information such as their chemical compositions, particle diameter.
Current, employed atmosphere pollution aviation atmospheric seeing sampling thief has that volume is bigger than normal, buying expenses is expensive, and all be from external import, there is very large problem in this in operational process, aspect after sale installation, technical training and the maintenance, this has hindered correlative study carrying out at home to a certain extent.And the domestic rainmaking baby plane that adopts gathers experiment more, designs therefore that a nested structure is simple, easy for installation, the anti-plug-flow water dust of the minitype airborne larger water dust of the acquisition granularity, that meet rainmaking baby plane sampling apparatus becomes a problem demanding prompt solution.
Summary of the invention
For solving above-mentioned technical deficiency, the utility model provides the anti-plug-flow water dust of a kind of simple in structure, economical and practical minitype airborne sampling apparatus.
The technical solution of the utility model is as follows:
The anti-plug-flow water dust of a kind of minitype airborne sampling apparatus comprises inlet chamber and collecting chamber, and described collecting chamber is arranged on inlet chamber inside; The front end of described inlet chamber links to each other with the outward flange of the sampling end of collecting chamber, and the afterbody of described inlet chamber is provided with draft tube; Described collecting chamber comprises the tubular sampling end that links to each other successively, preheating cavity and the tubular end of catching, connect on the tube wall of described tubular sampling end and be provided with micropore, outer wall at the preheating cavity is surrounded with heating arrangement, the preheating cavity afterbody be provided with exhaust tube, the anti-plug-flow water dust of minitype airborne described in the utility model sampling apparatus is fixedly connected with airframe by flange, described draft tube links to each other with gas compression pump in the aircraft, described exhaust tube branches into two-way: wherein one the tunnel links to each other with sampling film in the aircraft, be used for to gather cloud tuberculosis particle, another road links to each other with aspiration pump in the aircraft.
Preferred according to the utility model, the length range of tubular sampling end: 8-10mm, the diameter range of tubular sampling end: 1-2mm; Be provided with the multi-turn micropore around tubular sampling end, the quantity of every circle micropore is 6-8, interval 1-1.5mm between the adjacent turn; The diameter range of described micropore: 10-20 μ m; The diameter range of described preheating cavity: 3-5mm; The diameter range of described inlet chamber: 10-20mm.
Preferred according to the utility model, the front end of described inlet chamber is taper.
Preferred according to the utility model, described preheating cavity is copper pipe.
Preferred according to the utility model, the described tubular end of catching is counterclockwise 15-30 ° angle with level.The described tubular end of catching only plays barrier air, makes air-flow be back to exhaust tube by reverse stopping, and then large probability described water dust is gathered.
Preferred according to the utility model, described heating arrangement is the heating rod thermopair.Because device described in the utility model is mainly used to collect water dust, therefore the heating rod thermopair of installing maintains about 50 ℃ the temperature degree of sampling in the device, water in the water dust is become water vapour, cloud tuberculosis particle after the evaporation is sampled pneumatic transmission and enters engine room inside, and is collected in the sampling film surface.
The beneficial effects of the utility model are:
1, sampling apparatus described in the utility model can be used for gathering specially aerosol particle or the water dust of large particle diameter.Utilize the utility model to gather granularity greater than aerosol particle or the water dust of 5 μ m by Effective selection.
2, the utility model is economical and practical, starting material are easy to get, easy to process.
3, the utility model is of many uses, small investment, and it is convenient to use, and has practice significance, improves feasibility and the practicality of aviation Sampling techniques, can be used for during the cloud and mist collection to the high-altitude water dust.
4, the utility model the time need not aircraft is made any change carrying out the aviation sampling, only gets final product by utilizing foot bolt on the aircraft existing duck eye in bottom and the aircraft floor to install and fix, and can not cause the potential safety hazard of flight.
Description of drawings
Fig. 1 is structural representation of the present utility model;
Fig. 2 is acquisition principle figure of the present utility model;
In Fig. 1-2,1, inlet chamber; 2, collecting chamber; 3, draft tube; 4, tubular sampling end; 5, preheating cavity; 6, the tubular end of catching; 7, micropore; 8, heating arrangement; 9, exhaust tube; 10, flange; 11, temperature control display; 12, air intake opening; α is tubular angle of catching end and level; A flows to for sampling gas enters a road behind the collecting chamber along micropore; B flows to along another road that micropore enters behind the collecting chamber for sampling gas; C is extraneous air-flow; 13, sampling gas B and extraneous air-flow C offset and form first air-flow zero-velocity layer; 14, sampling gas A and sampling gas B form second air-flow zero-velocity layer in the place of shunting; F1 is the flow of sampling gas in the draft tube; F2 is the flow of gas in the exhaust tube; F3 is the flow of another road sampling gas B.
Embodiment
Below in conjunction with embodiment and Figure of description the utility model is described in detail, but is not limited to this.
Embodiment 1,
The anti-plug-flow water dust of a kind of minitype airborne sampling apparatus comprises inlet chamber 1 and collecting chamber 2, and described collecting chamber 2 is arranged on inlet chamber 1 inside; The front end of described inlet chamber 1 links to each other with the outward flange of the sampling end of collecting chamber, and the front end of described inlet chamber 1 is taper, and the afterbody of described inlet chamber 1 is provided with draft tube 3; Described collecting chamber 2 comprises tubular sampling end 4, preheating cavity 5 and the tubular end 6 of catching that links to each other successively, connect on the tube wall of described tubular sampling end 4 and be provided with micropore 7, outer wall at preheating cavity 5 is surrounded with heating arrangement 8, and described heating arrangement is the heating rod thermopair; Preheating cavity 5 afterbody be provided with exhaust tube 9, described preheating cavity 5 is copper pipe.
The anti-plug-flow water dust of described minitype airborne sampling apparatus is fixedly connected with airframe by flange 10, described draft tube 3 links to each other with gas compression pump in the aircraft, described exhaust tube 9 branches into two-way: wherein one the tunnel links to each other with sampling film in the aircraft, be used for to gather cloud tuberculosis particle, another road links to each other with aspiration pump in the aircraft.
The length of tubular sampling end 4: 10mm, the diameter of tubular sampling end: 2mm; Be provided with multi-turn micropore 7 around tubular sampling end 4, the quantity of every circle micropore is 8, interval 1mm between the adjacent turn; The diameter of described micropore 7: 15 μ m; The diameter of described preheating cavity: 5mm; The diameter of described inlet chamber: 20mm.Describedly tubularly catch 6 ends and level is counterclockwise α angle: 15 °.
The method of work of the anti-plug-flow water dust of embodiment 1 described minitype airborne sampling apparatus is as follows:
(1) described sampling gas enters inlet chamber 1 along draft tube 3, and described preheating cavity 5 is heated to 48-52 ℃;
(2) the sampling gas in the inlet chamber 1 enters collecting chamber 2 along the micropore 7 on the tubular sampling end 4, the flow F1 of draft tube 3 interior sampling gas is greater than the flow F2 of exhaust tube, the described sampling gas that is entered by draft tube is divided into two-way sampling gas by with the tubular sampling end 4 of micropore 7 time: wherein sample flow F2 and the direction of gas of one tunnel sampling gas A and exhaust tube is all identical, the opposite direction of another road sampling gas B and exhaust tube sampling gas, flow is F3; Its discharge relation is F1=F2+F3;
(3) described sampling gas B and extraneous air-flow offset, form first air-flow zero-velocity layer 13 at air intake opening 12 places, sampling gas A and sampling gas B form second air-flow zero-velocity layer 14 in the place of shunting: the aerosol particle in extraneous air-flow or water dust are enough large, and after passing first and second zero-velocity layer, described aerosol particle or water dust are caught into the sampling film surface in the aircraft; Otherwise described aerosol particle or water dust then are sampled gas B and release tubular sampling end 4.
Utilize method described in the utility model, can gather granularity greater than aerosol particle or the water dust of 5 μ m by Effective selection.
Embodiment 2,
Water dust sampling apparatus as described in Example 1, its difference be,
The length of described tubular sampling end 4: 8mm, the diameter of tubular sampling end: 1.5mm; Be provided with the multi-turn micropore around tubular sampling end, the quantity of every circle micropore is 6, interval 1.5mm between the adjacent turn; The diameter of described micropore: 10 μ m; The diameter of described preheating cavity: 4mm; The diameter range of described inlet chamber: 18mm.The described tubular end of catching is counterclockwise 25 ° of angles with level.
The aerosol particle that utilizes the described water dust sampling apparatus of present embodiment to screen to collect or water dust granularity scope have satisfied the experiment needs that selectivity gathers bulky grain aerosol particle or water dust between 5-10 μ m.
Embodiment 4,
Water dust sampling system as described in Example 1, its difference be,
The diameter of tubular sampling end: 1mm; Be provided with the multi-turn micropore around tubular sampling end, the quantity of every circle micropore is 6, interval 1mm between the adjacent turn; The diameter range of described micropore: 10 μ m; The diameter range of described preheating cavity: 3mm; The diameter range of described inlet chamber: 15mm.The described tubular end of catching is counterclockwise 20 ° of angles with level.
The aerosol particle that utilizes the described water dust sampling apparatus of present embodiment to screen to collect or water dust granularity scope have satisfied the experiment needs that selectivity gathers bulky grain aerosol particle or water dust between 5-8 μ m.
Claims (7)
1. the anti-plug-flow water dust of a minitype airborne sampling apparatus is characterized in that it comprises inlet chamber and collecting chamber, and described collecting chamber is arranged on inlet chamber inside; The front end of described inlet chamber links to each other with the outward flange of the sampling end of collecting chamber, and the afterbody of described inlet chamber is provided with draft tube; Described collecting chamber comprises tubular sampling end, preheating cavity and the tubular end of catching that links to each other successively, connect on the tube wall of described tubular sampling end and be provided with micropore, outer wall at the preheating cavity is surrounded with heating arrangement, the preheating cavity afterbody be provided with exhaust tube.
2. the anti-plug-flow water dust of a kind of minitype airborne according to claim 1 sampling apparatus, it is characterized in that, the anti-plug-flow water dust of described minitype airborne sampling apparatus is fixedly connected with airframe by flange, described draft tube links to each other with gas compression pump in the aircraft, described exhaust tube branches into two-way: wherein one the tunnel links to each other with sampling film in the aircraft, be used for to gather cloud tuberculosis particle, another road links to each other with aspiration pump in the aircraft.
3. the anti-plug-flow water dust of a kind of minitype airborne according to claim 1 sampling apparatus is characterized in that, the length range of described tubular sampling end: 8-10mm, the diameter range of tubular sampling end: 1-2mm; Be provided with the multi-turn micropore around tubular sampling end, the quantity of every circle micropore is 6-8, interval 1-1.5mm between the adjacent turn; The diameter range of described micropore: 10-20 μ m; The diameter range of described preheating cavity: 3-5mm; The diameter range of described inlet chamber: 10-20mm.
4. the anti-plug-flow water dust of a kind of minitype airborne according to claim 1 sampling apparatus is characterized in that, the front end of described inlet chamber is taper.
5. the anti-plug-flow water dust of a kind of minitype airborne according to claim 1 sampling apparatus is characterized in that, described preheating cavity is copper pipe.
6. the anti-plug-flow water dust of a kind of minitype airborne according to claim 1 sampling apparatus is characterized in that, the described tubular end of catching is counterclockwise 15-30 ° angle with level.
7. the anti-plug-flow water dust of a kind of minitype airborne according to claim 1 sampling apparatus is characterized in that, described heating arrangement is the heating rod thermopair.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220524270 CN202853948U (en) | 2012-10-12 | 2012-10-12 | Small onboard back-stepping flow cloud droplet sampling device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220524270 CN202853948U (en) | 2012-10-12 | 2012-10-12 | Small onboard back-stepping flow cloud droplet sampling device |
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| CN202853948U true CN202853948U (en) | 2013-04-03 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102879233A (en) * | 2012-10-12 | 2013-01-16 | 山东大学 | Miniature onboard reverse plug flow cloud droplet sampling device and working method thereof |
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- 2012-10-12 CN CN 201220524270 patent/CN202853948U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102879233A (en) * | 2012-10-12 | 2013-01-16 | 山东大学 | Miniature onboard reverse plug flow cloud droplet sampling device and working method thereof |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130403 Termination date: 20151012 |
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| EXPY | Termination of patent right or utility model |