CN201434815Y - Real-time detecting device for particle size distribution of cigarette smoke aerosol - Google Patents
Real-time detecting device for particle size distribution of cigarette smoke aerosol Download PDFInfo
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- CN201434815Y CN201434815Y CN2009201112367U CN200920111236U CN201434815Y CN 201434815 Y CN201434815 Y CN 201434815Y CN 2009201112367 U CN2009201112367 U CN 2009201112367U CN 200920111236 U CN200920111236 U CN 200920111236U CN 201434815 Y CN201434815 Y CN 201434815Y
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Abstract
The utility model discloses a real-time detecting device for particle size distribution of a cigarette smoke aerosol. The device comprises a smoke suction machine (1), a dilution device (2), an aerosol particle-size spectrometer (3) and a temperature adjuster (4), wherein the smoke suction machine (1) is communicated with the dilution device (2) by passing through an electromagnetic valve (9) by ametal pipe (8); the other end of the dilution device (2) is communicated with the aerosol particle-size spectrometer (3) by the metal pipe (8); a waste gas outlet G is arranged on the dilution device(2); heaters (5) are communicated between the smoke suction machine (1) and the dilution device (2) as well as between the dilution device (2) and the aerosol particle-size spectrometer (3) by the metal pipe (8) respectively; and the heaters (5) are controlled by the temperature adjuster (4) and are sequentially communicated with an electronic flow-meter (6) and a filter (7). The device ensures that the collected smoke aerosol sample can not only meet the burning and smoking requirements of cigarette samples, but also lead the density of the sampling gas entering the aerosol particle-size spectrometer to be within the effective detection range of the spectrometer; the device can detect the cigarette smoke in real time, meanwhile, the loss of the particles of the cigarette smoke aerosol can be reduced in the conveying process by adopting the heating technology with partial connecting pipes.
Description
Technical field
The utility model belongs to technical field of analysis and detection, is specifically related to a kind of cigarette flue gas aerosol size distribution real-time detection apparatus of real-time detection cigarette flue gas aerosol size distribution situation.
Background technology
In the prior art, when the gasoloid particle diameter distribution situation in the employing gasoloid particle diameter spectrometer mensuration cigarette sample flue gas, mainly pass through smoking machine, diluter is connected with the particle diameter spectrometer, because the aerosol concentration in the cigarette smoke is far longer than aerial concentration, the concentration of diluter diluents does not reach the requirement that the particle diameter spectrometer detects desired concn, gasoloid particle diameter spectrometer seriously transships when causing suction easily, all detected value indifferences of back appear detecting, testing result all is maximal value or exceeds situations such as the instrument detecting upper limit, thereby can't carry out check and analysis.And, because in the cigarette smoke gas coming through pipeline process, flue gas is easy to generate condensation on tube wall, be attached on the gas delivery tube wall, thereby cause the loss of flue gas in dilution, course of conveying, influence the analyzing and testing result occurs than mistake to the accuracy that the flue gas aerosol granularmetric analysis detects.In addition, the flue gas sample gas concentration of input is too high, and the tar in the flue gas is bonded at gasoloid detecting instrument the inside easily, easily causes instrument to stop up, and internal pressure is excessive, and the flow velocity instability is cleaned situations such as difficulty.Therefore, in the analysis and detection technology of existing cigarette flue gas aerosol, lack a kind of stable, adjustable gas concentration, temperature and flow velocity, and can detect the pick-up unit of fresh smoke in real time, detect gasoloid particle diameter distribution situation in the cigarette smoke to such an extent as to existing gasoloid detection technique can't be real-time, accurate, easy and simple to handle.For this reason, the design people has developed a kind of cigarette flue gas aerosol size distribution real-time detection apparatus through long-term practice research.
The utility model content
The purpose of this utility model provides a kind of process stabilizing, and is easy and simple to handle, measures accurate cigarette flue gas aerosol size distribution real-time detection apparatus.
The purpose of this utility model is achieved through the following technical solutions: comprise smoking machine, diluter, gasoloid particle diameter spectrometer, temperature regulator, described smoking machine is communicated with diluter through solenoid valve by metal tube, the other end of diluter is communicated with gasoloid particle diameter spectrometer by metal tube, diluter is provided with waste gas outlet G, smoking machine and diluter, be communicated with well heater by metal tube respectively between diluter and the gasoloid particle diameter spectrometer, well heater is controlled by temperature regulator, and well heater is communicated with electronic flow-meter and filtrator successively.
The utility model is by improving the design that is connected between smoke generator and gasoloid particle diameter spectrometer, adopting increases adjustable assist gas, set appropriate gas flow speed, keep the temperature of pure air air inlet pipeline, reduce the condensation loss that produces at tube wall in the flue gas course of conveying; When detecting the cigarette smoke sample in real time, the flue gas aerosol sample of being gathered had both met cigarette sample and had burnt and sucked requirement, can make the sample gas concentration that enters gasoloid particle diameter spectrometer again in the valid analysing range of instrument, had realized the purpose that dynamic real-time detects.
Description of drawings
Below in conjunction with accompanying drawing the utility model is further described, but never in any form the utility model is limited.
Fig. 1 is the utility model one-piece construction and principle of work synoptic diagram;
Fig. 2 detects the testing result synoptic diagram of flue gas aerosol size distribution for prior art;
Fig. 3 is unkitted the testing result synoptic diagram of adjustable temperature admission gear for the utility model;
Fig. 4 detects the testing result synoptic diagram of cigarette flue gas aerosol size distribution for the utility model.
Wherein: 1-smoking machine, 2-diluter, 3-gasoloid particle diameter spectrometer, 4-temperature regulator, 5-well heater, 6-electronic flow-meter, 7-filtrator, 8-metal tube, 9-solenoid valve.
Embodiment
As shown in Figure 1, the utility model comprises smoking machine 1, diluter 2, gasoloid particle diameter spectrometer 3, temperature regulator 4, described smoking machine is communicated with diluter 2 through solenoid valve 9 by metal tube 8, the other end of diluter 2 is communicated with gasoloid particle diameter spectrometer 3 by metal tube 8, diluter 2 is provided with waste gas outlet G, smoking machine and diluter 2, be communicated with well heater 5 by metal tube 8 respectively between diluter 2 and the gasoloid particle diameter spectrometer 3, well heater 5 is controlled by temperature regulator 4, and well heater 5 is communicated with electronic flow-meter 6 and filtrator 7 successively.
Described electronic flow-meter 6 working ranges: 10lpm～15lpm.
The working range of described well heater 5: 20 ℃～120 ℃.
Smoking machine is the aspirator by GB smoking cigarette flue gas sample, and from the air-flow (being called for short combination gas G1) that smoking machine flows out, its flow set can not arbitrarily be changed, general sensing range: 1lpm～2lpm.Solenoid valve in the smoking machine communicates with surrounding air, is set to suction in a minute once, and wherein 2s connection smoking machine carries out the cigarette smoke collection, and 58s switches to draws ambient air, proceeds to the cigarette sample suction repeatedly and finishes.
Entering the air-flow of being examined of gasoloid particle diameter spectrometer 3, be called for short combination gas G4, by the control of gasoloid particle diameter spectrometer, is a fixed value, scope 10lpm～40lpm.
Diluter 2 dilution ratios are 20: 1～1800: 1.Can guarantee that the combination gas 4 that enters gasoloid particle diameter spectrometer 3 meets the detection requirement of gasoloid particle diameter spectrometer 3 after third level dilution.
Principle of work of the present utility model:
The metal tube, temperature regulator, well heater, electronic flow-meter and the filtrator that connect smoking machine have constituted first order air mix facilities of the present utility model; Diluter and Waste gas outlet G have constituted second level air mix facilities; The metal tube, temperature regulator, well heater, electronic flow-meter, the filtrator that connect diluter, gasoloid particle diameter spectrometer have constituted third level air mix facilities.
First and third grade of air mix facilities realizes that mainly the dilution and the metal tube of flue gas stream concentration heat, and it is consistent to guarantee that the pure air temperature that enters and fresh smoke flow temperature.The dilution ratio of first and third grade of dilution requires institute to determine by the detection of electronic flow-meter flow velocity and cigarette smoke, and for the gas requirement that enters the diluter front, the flow velocity of adjusting flowmeter is adjusted to 1lpm～1.5lpm and enters diluter; The temperature of metal tube is by well heater and temperature regulator control.
From the air-flow (being called for short combination gas G1) that smoking machine flows out, its flow set can not arbitrarily be changed, general sensing range: 1lpm～2lpm.Solenoid valve in the smoking machine communicates with surrounding air, is set to suction in a minute once, and wherein 2s connection smoking machine carries out the cigarette smoke collection, and 58s switches to draws ambient air, proceeds to the cigarette sample suction repeatedly and finishes.First order air mix facilities is the pure air A that an air intake opening input filter filters, behind the electronic flow-meter adjusting flow (about 1lpm～1.5lpm), connect by a T-valve, export (being called for short combination gas G2) to second level air mix facilities through the mixed gas delivery outlet.And the pure air that is flowed out by electronic flow-meter is delivered to a metal tube, by temperature regulator control heater heating metal pipe, adjusting enters the temperature of metal inner air tube, reduce the temperature difference of pure air and fresh smoke, minimizing produces the loss that condensation causes because of combination gas on the gas tube wall.
Enter the combination gas G2 of second level air mix facilities, by being to be called for short combination gas G3 (flow velocity is 0.5lpm～5lpm) after the diluter dilution, export third level air mix facilities to, dilute again through third level air mix facilities, the pure air that the heating of adjustable temperature admission gear enters, dilution guarantees finally that for combination gas G4 combination gas G4 flow velocity is 10lpm～40lpm, enters gasoloid particle diameter spectrometer and detects.
Fig. 2 shows the result that prior art detects flue gas, and it is poor to detect dynamic stability, noise level height, poor reproducibility.
Choose cigarette sample through smoking machine smoking cigarette test flue gas, adopt existing gasoloid particle diameter spectrometer directly to measure flue gas aerosol size distribution situation, by the getter device of particle diameter spectrometer (the outwards direct intake-gas sample of 10lpm～40lpm) itself; But when adopting gasoloid particle diameter spectrometer to measure the flue gas of cigarette sample, because the aerosol concentration in the cigarette smoke is far longer than aerial situation, gasoloid particle diameter spectrometer seriously transships when causing suction easily.Adopt particle diameter spectrometer diluter providing with the machine to carry out carrying out again after cigarette smoke dilutes the detection of gasoloid particle diameter, the flue gas sample gas concentration that also can occur importing is too high, tar in the flue gas is bonded at the detecting instrument the inside easily, easily cause instrument to stop up, internal pressure is excessive, the flow velocity instability is cleaned situations (result as shown in Figure 2) such as difficulty.
Fig. 3 shows the utility model in the result who does not have to detect under the thermoregulator situation.If in example 2, do not use first and third grade of temperature regulator, well heater and metal tube in the air mix facilities, the temperature of the pure air that will enter because of flowmeter is lower than the temperature of fresh smoke, produce temperature difference, cause mixed flue gas on the connection tube wall, to produce condensation, error appears when gasoloid particle diameter spectrometer image data, thereby influence detects inadequately and stablize, and reappearance is not ideal enough the testing result of cigarette flue gas aerosol.
Fig. 4 shows the result that the utility model detects.Obviously the result is stable, and reappearance is better.
Claims (1)
1, a kind of cigarette flue gas aerosol size distribution real-time detection apparatus, comprise smoking machine (1), diluter (2), gasoloid particle diameter spectrometer (3), temperature regulator (4), it is characterized in that: described smoking machine (1) is communicated with diluter (2) through solenoid valve (9) by metal tube (8), the other end of diluter (2) is communicated with gasoloid particle diameter spectrometer (3) by metal tube (8), and diluter (2) is provided with waste gas outlet (G); Smoking machine (1) and diluter (2), be communicated with well heater (5) by metal tube (8) respectively between diluter (2) and the gasoloid particle diameter spectrometer (3), well heater (5) is controlled by temperature regulator (4), and well heater (5) is communicated with electronic flow-meter (6) and filtrator (7) successively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201112367U CN201434815Y (en) | 2009-04-15 | 2009-04-15 | Real-time detecting device for particle size distribution of cigarette smoke aerosol |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201112367U CN201434815Y (en) | 2009-04-15 | 2009-04-15 | Real-time detecting device for particle size distribution of cigarette smoke aerosol |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201434815Y true CN201434815Y (en) | 2010-03-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201112367U Expired - Fee Related CN201434815Y (en) | 2009-04-15 | 2009-04-15 | Real-time detecting device for particle size distribution of cigarette smoke aerosol |
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| Country | Link |
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| CN (1) | CN201434815Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102087193A (en) * | 2011-01-29 | 2011-06-08 | 湖南中烟工业有限责任公司 | Cigarette smoke aerosol testing device |
| CN102507401A (en) * | 2011-11-07 | 2012-06-20 | 中国科学院安徽光学精密机械研究所 | Simulated telemetry system and method for infrared extinction and particle size of bio-aerosol |
-
2009
- 2009-04-15 CN CN2009201112367U patent/CN201434815Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102087193A (en) * | 2011-01-29 | 2011-06-08 | 湖南中烟工业有限责任公司 | Cigarette smoke aerosol testing device |
| CN102087193B (en) * | 2011-01-29 | 2012-07-11 | 湖南中烟工业有限责任公司 | Cigarette smoke aerosol testing device |
| CN102507401A (en) * | 2011-11-07 | 2012-06-20 | 中国科学院安徽光学精密机械研究所 | Simulated telemetry system and method for infrared extinction and particle size of bio-aerosol |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100331 Termination date: 20120415 |