CN107014726A - A kind of air pollutants detection means and air pollution object detecting method - Google Patents
A kind of air pollutants detection means and air pollution object detecting method Download PDFInfo
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- CN107014726A CN107014726A CN201710362263.0A CN201710362263A CN107014726A CN 107014726 A CN107014726 A CN 107014726A CN 201710362263 A CN201710362263 A CN 201710362263A CN 107014726 A CN107014726 A CN 107014726A
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- 239000000809 air pollutant Substances 0.000 title claims abstract description 37
- 231100001243 air pollutant Toxicity 0.000 title claims abstract description 37
- 238000003915 air pollution Methods 0.000 title claims abstract description 26
- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000000746 purification Methods 0.000 claims abstract description 51
- 239000002245 particle Substances 0.000 claims abstract description 23
- 239000012528 membrane Substances 0.000 claims abstract description 19
- 239000003344 environmental pollutant Substances 0.000 claims abstract description 18
- 231100000719 pollutant Toxicity 0.000 claims abstract description 18
- 238000012544 monitoring process Methods 0.000 claims abstract description 12
- 230000003287 optical effect Effects 0.000 claims description 14
- 230000005540 biological transmission Effects 0.000 claims description 13
- 239000012491 analyte Substances 0.000 claims description 2
- 238000001914 filtration Methods 0.000 claims description 2
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- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
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- 229910002651 NO3 Inorganic materials 0.000 description 1
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
- G01N15/06—Investigating concentration of particle suspensions
-
- 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
- G01N1/34—Purifying; Cleaning
-
- G01N15/075—
Abstract
The invention discloses a kind of air pollutants detection means and air pollution object detecting method, detection means includes：Bulky grain piece-rate system and pollutant monitoring system；Bulky grain piece-rate system includes gas purification cylinder barrel, piston and gas inlet pipe, and piston is arranged in gas purification cylinder barrel, for the gas in gas purification cylinder barrel to be discharged；First control valve is installed on gas inlet pipe；Small particles of pollution thing monitoring system includes detection cylinder barrel, detector and gas outlet pipe for detecting small particle concentration；Gas outlet pipe is connected with detection cylinder barrel, and gas outlet pipe is provided with the second control valve；The gas outlet of gas purification cylinder barrel is connected between the air inlet with detecting cylinder barrel by capillary connecting tube, and capillary connecting tube is provided with the 3rd control valve, and the end of capillary connecting tube connecting detection cylinder barrel air inlet is provided with filter membrane.Detection means of the present invention air to be detected is detected using bulky grain piece-rate system before processing, make testing result more accurate.
Description
Technical field
The invention belongs to particulate contaminants Concentration Detection field in air, more particularly to a kind of air pollutants
Detection means and air pollution object detecting method.
Background technology
PM2.5（Particulate Matter 2.5）Refer in atmosphere be less than or equal to 2.5 μm solia particle or
The general name of drop, this finely ground particles can enter lung, therefore be otherwise known as subparticle or go directly to the alveoli, and its composition is main
It is Organic Compounds, sulfate, nitrate, ammonium salt and sodium, magnesium, calcium, aluminium, even iron, the element such as lead, zinc, arsenic, cadmium.By
In their particles are small, therefore light weight can suspend in atmosphere for a long time, the Driftdiffusion of long range makes air by dirt
Dye.
Haze is the result that specific weather condition interacts with mankind's activity.The economy of high density population and social activities
A large amount of fine particles will necessarily be discharged, once discharge exceedes atmospheric air circulation ability and carrying degree, fine particle concentration will be accumulated persistently
It is poly-, if now influenceed by quiet steady weather etc., easily there is wide range of haze.Haze produce main source, be daily generating,
During industrial production, building waste, motor vehicle exhaust emission etc., by the residue of burning and exhausting, mostly containing heavy metal etc.
Noxious material.PM2.5 is the main cause of weather haze.Fine particle is that the upper respiratory tract of people can't stop, and they can be suitable
Profit is descending, into bronchiole, alveolar, makes the immunity degradation of people, in terms of triggering asthma, bronchitis and angiocarpy
Disease, the blood that can also damage people conveys the ability of oxygen to albumen, loses blood.
In order that the common people can accurately perceive local air quality, to reduce its outdoor activity or prompting in polluting weather
It takes corresponding safeguard measure, and convenient, fast to PM2.5 progress, real-time detection just becomes one and is significant
Work.
The content of the invention
The first object of the present invention is to provide a kind of air pollutants detection means, and the second object of the present invention is to provide one
Air pollution object detecting method is planted, to solve to utilize existing air pollutants detection means to carry out air pollution analyte detection presence
The problem of testing result is inaccurate.
In order to realize above-mentioned first purpose, the present invention provides a kind of air pollutants detection means, and it includes：Bulky grain point
From system and pollutant monitoring system.
The bulky grain piece-rate system include gas purification cylinder barrel, piston and gas inlet pipe, the gas inlet pipe with
The gas purification cylinder barrel connection, the piston is arranged in the gas purification cylinder barrel, for by gas purification cylinder barrel
Gas is discharged；First control valve is installed on the gas inlet pipe.
The small particles of pollution thing monitoring system includes detection cylinder barrel, for detecting that the detector of small particle concentration is gentle
Body discharge pipe；The gas outlet pipe is connected with detection cylinder barrel, and gas outlet pipe is provided with the second control valve.
The gas outlet of the gas purification cylinder barrel is connected between the air inlet with detecting cylinder barrel by capillary connecting tube, described
Capillary connecting tube is provided with the 3rd control valve, and the end of capillary connecting tube connecting detection cylinder barrel air inlet is provided with filter membrane.
Air pollutants detection means as described above of the invention and air pollution object detecting method, further, in addition to
Active gas handling system, the active gas handling system is connected with gas inlet pipe.
Air pollutants detection means as described above of the invention and air pollution object detecting method, further, in addition to
Lose heart branch pipe and gas bleeder valve, and the discouraged branch pipe is connected with capillary connecting tube, and tie point is located proximate to filter membrane, and the gas bleeder valve is set
Put on gas outlet.
Air pollutants detection means as described above of the invention and air pollution object detecting method, further, the inspection
Surveying cylinder barrel includes the first optical transmission window and the second optical transmission window；For detecting that the detector of small particle concentration includes detection light source
And photo-detector, the detection light source is installed in the first optical transmission window position, and the photo-detector is installed in the second optical transmission window
Position.
Further, the detection light source is infrared light supply, ultraviolet source or LASER Light Source, and the photo-detector is and inspection
The corresponding infrared detector in light-metering source, ultraviolet detector or laser detector.
Air pollutants detection means as described above of the invention and air pollution object detecting method, further, in addition to
Automatic control system, the automatic control system be used for control piston, the first control valve, the second control valve, the 3rd control valve and
Detector carries out air pollutants automatic detection.
Air pollutants detection means as described above of the invention and air pollution object detecting method, further, the filter
Film is used to filter out the air pollutants that particle diameter is more than or equal to 2.5 microns.
In order to realize above-mentioned second purpose, the present invention provides the first air pollution object detecting method, using as above any
Air pollutants detection means described in is realized, is comprised the following steps：
Step 1, the first control valve of bulky grain piece-rate system is opened, the 3rd control valve installed in capillary connecting tube is closed, makes
Air to be detected enters gas purification cylinder barrel.
Step 2, the first control valve is closed, the 3rd control valve and the second control valve is opened, piston is run gas purification cylinder
Air to be detected in cylinder is by capillary connecting tube push-in detection cylinder barrel.
Step 3, the 3rd control valve and the second control valve are closed, the air in detection cylinder barrel is polluted using detector
Thing Concentration Testing.
In order to realize above-mentioned second purpose, the present invention provides second of air pollution object detecting method, using described above
Air pollutants detection means realize, comprise the following steps：
Step 1, the first control valve of bulky grain piece-rate system is opened, the 3rd control valve installed in capillary connecting tube is closed, led to
Crossing active gas handling system makes air to be detected enter gas purification cylinder barrel.
Step 2, the first control valve is closed, the 3rd control valve and the second control valve is opened, piston is run gas purification cylinder
Air to be detected in cylinder is by capillary connecting tube push-in detection cylinder barrel.
Step 3, the 3rd control valve and the second control valve are closed, the air in detection cylinder barrel is polluted using detector
Thing Concentration Testing.
Step 4, the first control valve, the 3rd control valve and the second control valve are opened, is filled with using active gas handling system new
Air, finally closes the first control valve, the 3rd control valve and the second control valve.
In order to realize above-mentioned second purpose, the present invention provides the third air pollution object detecting method, utilizes the as above the 3rd
Air pollutants detection means described in is realized, is comprised the following steps：
Step 1, the first control valve of bulky grain piece-rate system, the 3rd control valve and branch of losing heart installed in capillary connecting tube are opened
The gas bleeder valve installed on pipe, closes the second control valve；Air to be detected is set to enter gas purification cylinder barrel by active gas handling system
With capillary connecting tube.
Step 2, the first control valve and gas bleeder valve are closed, the 3rd control valve and the second control valve is opened, piston is run gas
Air to be detected in body purification cylinder barrel is by capillary connecting tube push-in detection cylinder barrel.
Step 3, the 3rd control valve and the second control valve are closed, the air in detection cylinder barrel is polluted using detector
Thing Concentration Testing.
Step 4, the first control valve, the 3rd control valve and the second control valve are opened, is filled with using active gas handling system new
Air, finally closes the first control valve, the 3rd control valve and the second control valve.
If directly carrying out pollutant concentration detection to air to be detected, the presence of bulky grain pollutant can influence detection to tie
The accuracy of fruit, makes testing result bigger than normal.Detection means of the present invention is carried out using bulky grain piece-rate system to air to be detected
Processing before detection, makes testing result more accurate.
Brief description of the drawings
By the detailed description made in conjunction with the following drawings, above-mentioned and/or otherwise advantage of the invention will become
Become apparent from and be easier to understand, these accompanying drawings are schematical, are not intended to limit the present invention, wherein：
Fig. 1 is the air pollutants detection means of the first embodiment of the invention.
Fig. 2 is the air pollutants detection means of second of embodiment of the invention.
Fig. 3 is the air pollution object detecting method schematic flow sheet of an embodiment of the present invention.
Fig. 4 is the air pollution object detecting method schematic flow sheet of another embodiment of the invention.
In accompanying drawing, the list of parts representated by each label is as follows：
1st, bulky grain piece-rate system, 2, pollutant monitoring system, 11, gas purification cylinder barrel, 12, piston, 13, gas inlet pipe,
14th, the first control valve, the 21, first optical transmission window, the 22, second optical transmission window, 23, detection light source, 24, photo-detector, 25, gas
Discharge pipe, the 26, second control valve, 27, detection cylinder barrel, 31, capillary connecting tube, 32, filter membrane, the 33, the 3rd control valve, 34, lose heart
Branch pipe, 35, gas bleeder valve.
Embodiment
Hereinafter, the air pollutants detection means and air pollution object detecting method of the present invention is described with reference to the accompanying drawings
Embodiment.
The embodiment recorded herein is the specific embodiment of the present invention, the design for illustrating the present invention,
It is explanatory and exemplary, should not be construed as the limitation to embodiment of the present invention and the scope of the invention.Except what is recorded herein
Implement exception, those skilled in the art can also be based on the application claims and specification disclosure of that using aobvious
The other technical schemes being clear to, these technical schemes include any obvious using making for the embodiment to recording herein
The technical scheme of substitutions and modifications.
The accompanying drawing of this specification is schematic diagram, aids in illustrating the design of the present invention, it is schematically indicated the shape of each several part
And its correlation.It note that between the structure of each part for the ease of clearly showing the embodiment of the present invention, each accompanying drawing
Do not drawn according to identical ratio.Identical reference marker is used to represent identical part.
In following examples of the present invention filter membrane 32 be used to filtering out in air to be detected particle size be more than it is a range of
Pollutant.The particle size range is preferably 2.5 microns~10 microns.Such as filter membrane 32 is used to filter out particle diameter more than or equal to 2.5 microns
Air pollutants.
The Fig. 1 of embodiment 1 shows the air pollutants detection means of an embodiment of the present invention, and it includes：Bulky grain is separated
System 1 and pollutant monitoring system 2.
Bulky grain piece-rate system include gas purification cylinder barrel 11, piston 12 and gas inlet pipe 13, gas inlet pipe 13 with
Gas purification cylinder barrel 11 is connected, and piston 12 is arranged in gas purification cylinder barrel 11, for by the gas in gas purification cylinder barrel 11
Discharge；First control valve 14 is installed on gas inlet pipe 13.
Small particles of pollution thing monitoring system includes detection cylinder barrel 27, detector and gas for detecting small particle concentration
Discharge pipe 25；Gas outlet pipe 25 is connected with detection cylinder barrel 27, and gas outlet pipe 25 is provided with the second control valve 26；Preferred
In embodiment, the volume of gas purification cylinder barrel is more than the volume of detection cylinder barrel, and such as volume of gas purification cylinder barrel is detection cylinder
1.2~1.6 times of the volume of cylinder.
In the embodiment show in figure 1, detection cylinder barrel 27 includes the first optical transmission window 21 and the second optical transmission window 21；For
Detecting the detector of small particle concentration includes detection light source 23 and photo-detector 24, and detection light source 23 is arranged on the first light inlet window
21 positions of mouth, photo-detector 24 is arranged on the position of the second optical transmission window 21.In a preferred embodiment, detection light source 23 is infrared
Light source, ultraviolet source or LASER Light Source, photo-detector 24 be with detection the corresponding infrared detector of light source 23, ultraviolet detector or
Laser detector.I.e. detection light source 23 is LASER Light Source, and photo-detector 24 is laser detector.
The gas outlet of gas purification cylinder barrel 11 is connected between the air inlet with detecting cylinder barrel 27 by capillary connecting tube 31, hair
Thin connecting tube 31 is provided with the 3rd control valve 33, and the end of the air inlet of the connecting detection cylinder barrel of capillary connecting tube 31 is provided with filter membrane
32, in a particular embodiment, filter membrane is 5mm~20mm apart from the distance that capillary connects tube end.In a more preferred embodiment,
The capillary is glass tube, and the internal diameter of capillary is less than or equal to 1mm.
Illustrate to carry out air pollution object detecting method, including following step using the detection means of above-described embodiment with reference to Fig. 3
Suddenly：
Step 1, the first control valve 14 of bulky grain piece-rate system is opened, the 3rd control valve installed in capillary connecting tube 31 is closed
33, air to be detected is entered gas purification cylinder barrel 11；In the present embodiment, make air to be detected net into gas by cylinder
Change cylinder barrel 11.
Step 2, the first control valve 14 is closed, the 3rd control valve 33 and the second control valve 26 is opened, piston 12 is run gas
Air to be detected in body purification cylinder barrel 11 is by the push-in detection cylinder barrel 27 of capillary connecting tube 31.
Step 3, the 3rd control valve 33 and the second control valve 26 are closed, the air in detection cylinder barrel 27 is entered using detector
Row pollutant concentration is detected.
If directly carrying out pollutant concentration detection to air to be detected, the presence of bulky grain pollutant can influence detection to tie
The accuracy of fruit, makes testing result bigger than normal.Detection means of the present invention is carried out using bulky grain piece-rate system to air to be detected
Processing before detection, makes testing result more accurate.Present invention utilizes air to be detected is entered including gas purification cylinder barrel 11
Row interim storage, pollutant monitoring system is injected in detection by air by piston；Bulky grain pollution in air to be detected
Thing is filtered out by the filter membrane 32 in capillary connecting tube 31.In order to obtain more accurately testing result, air to be detected can not
Capillary connecting tube is directly filled with using equipment such as air pump or fans and carries out bulky grain separation, because the gas that this mode is filled with is deposited
In certain air pressure, the presence of the air pressure increases the density of air to be detected（The amount of pollutant is accordingly increased）, make detection
As a result it is bigger than normal.
Embodiment 2
Fig. 2 shows the air pollutants detection means of an embodiment of the present invention, and it includes：Bulky grain piece-rate system 1 and pollution
Quality testing examining system 2.
Bulky grain piece-rate system include gas purification cylinder barrel 11, piston 12 and gas inlet pipe 13, gas inlet pipe 13 with
Gas purification cylinder barrel 11 is connected, and piston 12 is arranged in gas purification cylinder barrel 11, for by the gas in gas purification cylinder barrel 11
Discharge；First control valve 14 is installed on gas inlet pipe 13.
Small particles of pollution thing monitoring system includes detection cylinder barrel 27, detector and gas for detecting small particle concentration
Discharge pipe 25.Gas outlet pipe 25 is connected with detection cylinder barrel 27, and gas outlet pipe 25 is provided with the second control valve 26.
The gas outlet of gas purification cylinder barrel 11 is connected between the air inlet with detecting cylinder barrel 27 by capillary connecting tube 31, hair
Thin connecting tube 31 is provided with the 3rd control valve 33, and the end of the air inlet of 31 connecting detection cylinder barrel of capillary connecting tube 27 is provided with filter membrane 3.
Active gas handling system, active gas handling system is connected with gas inlet pipe 13.
Illustrate to carry out air pollution object detecting method, including following step using the detection means of above-described embodiment with reference to Fig. 4
Suddenly：
Step 1, the first control valve 14 of bulky grain piece-rate system is opened, the 3rd control valve installed in capillary connecting tube 31 is closed
33, air to be detected is entered gas purification cylinder barrel 11 by active gas handling system.
Step 2, the first control valve 14 is closed, the 3rd control valve 33 and the second control valve 26 is opened, piston 12 is run gas
Air to be detected in body purification cylinder barrel 11 is by the push-in detection cylinder barrel 27 of capillary connecting tube 31.
Step 3, the 3rd control valve 33 and the second control valve 26 are closed, the air in detection cylinder barrel 27 is entered using detector
Row pollutant concentration is detected.
Step 4, the first control valve 14, the 3rd control valve 33 and the second control valve 26 are opened, is filled using active gas handling system
Enter new air, finally close the first control valve 14, the 3rd control valve 33 and the second control valve 26.
The effect of active gas handling system has two, one is it is net air to be detected is entered gas by active gas handling system
Change cylinder barrel 11, now piston is without motion；The second is after the completion of air pollutant concentration detection, being entered using active gas handling system
Row exhaust, makes new air enter detection means.
Embodiment 3
Fig. 2 shows the air pollutants detection means of an embodiment of the present invention, and it includes：Bulky grain piece-rate system 1 and pollution
Quality testing examining system 2.
Bulky grain piece-rate system include gas purification cylinder barrel 11, piston 12 and gas inlet pipe 13, gas inlet pipe 13 with
Gas purification cylinder barrel 11 is connected, and piston 12 is arranged in gas purification cylinder barrel 11, for by the gas in gas purification cylinder barrel 11
Discharge；First control valve 14 is installed on gas inlet pipe 13.
Small particles of pollution thing monitoring system includes detection cylinder barrel 27, detector and gas for detecting small particle concentration
Discharge pipe 25；Gas outlet pipe 25 is connected with detection cylinder barrel 27, and gas outlet pipe 25 is provided with the second control valve 26.
The gas outlet of gas purification cylinder barrel 11 is connected between the air inlet with detecting cylinder barrel 27 by capillary connecting tube 31, hair
Thin connecting tube 31 is provided with the 3rd control valve 33, and the end of the air inlet of 31 connecting detection cylinder barrel of capillary connecting tube 27 is provided with filter membrane
32。
Active gas handling system, active gas handling system is connected with gas inlet pipe 13.
Lose heart branch pipe 34 and gas bleeder valve 35, and the branch pipe 34 that loses heart is connected with capillary connecting tube 31, and tie point is located proximate to filter membrane
32, gas bleeder valve 35 is arranged on gas outlet.
Illustrate to carry out air pollution object detecting method, including following step using the detection means of above-described embodiment with reference to Fig. 4
Suddenly：
Step 1, the first control valve 14 of bulky grain piece-rate system, the and of the 3rd control valve 33 installed in capillary connecting tube 31 are opened
The gas bleeder valve 35 installed on discouraged branch pipe 34, closes the second control valve 26；Enter air to be detected by active gas handling system
Gas purification cylinder barrel 11 and capillary connecting tube 31.
Step 2, the first control valve 14 and gas bleeder valve 35 are closed, the 3rd control valve 33 and the second control valve 26, piston is opened
Air to be detected in gas purification cylinder barrel 11 is pushed into detection cylinder barrel 27 by 12 operations by capillary connecting tube 31.
Step 3, the 3rd control valve 33 and the second control valve 26 are closed, the air in detection cylinder barrel 27 is entered using detector
Row pollutant concentration is detected.
Step 4, the first control valve 14, the 3rd control valve 33 and the second control valve 26 are opened, is filled using active gas handling system
Enter new air, finally close the first control valve 14, the 3rd control valve 33 and the second control valve 26.
The effect of active gas handling system has two, one is it is net air to be detected is entered gas by active gas handling system
Change cylinder barrel 11, now piston is without motion；The second is after the completion of air pollutant concentration detection, being entered using active gas handling system
Row exhaust, makes new air enter detection means.
In the present embodiment, due to being provided with discouraged branch pipe 34 and gas bleeder valve 35, lose heart branch pipe 34 and capillary connecting tube 31
Connection, tie point is located proximate to filter membrane 32, and gas bleeder valve 35 is arranged on gas outlet.It is to be checked when carrying out the aeration step of step 1
The space of gas purification cylinder barrel 11 can be completely filled with by surveying air, and capillary connecting tube most spaces.So as to enter
During row step 2, all air to be detected of gas into detection cylinder barrel 27 detected the air of residual without last time, made step
3 testing result is more accurate.Meanwhile, in aeration step gas by lose heart branch pipe 34 discharge rather than after filter membrane by
Gas outlet pipe is discharged, and can reduce the volume through filter membrane gas, improves the service life of filter membrane.The present embodiment above-mentioned functions
Realization must combine active gas handling system and discouraged branch pipe 34 and gas bleeder valve 35 and could realize that Neither of the two can be dispensed.
In above-described embodiment 1-3, the control of each valve, the control of piston, the control of detector can be by manual
The mode of operation is realized, while the parts realization that automatically controls of electro-mechanical arts can also be selected to automatically control.Only need to be above-mentioned
Increase automatic control system in each embodiment, control piston 12, the first control valve 14, second are realized by automatic control system
Control valve 26, the 3rd control valve 33 and detector carry out air pollutants automatic detection.
Each technical characteristic of above-mentioned disclosure is not limited to disclosed and further feature combination, and those skilled in the art are also
Other combinations between each technical characteristic can be carried out according to the purpose of invention, are defined by the purpose for realizing the present invention.
Claims (10)
1. a kind of air pollutants detection means, it is characterised in that including：Bulky grain piece-rate system and pollutant monitoring system；
The bulky grain piece-rate system include gas purification cylinder barrel, piston and gas inlet pipe, the gas inlet pipe with it is described
Gas purification cylinder barrel is connected, and the piston is arranged in the gas purification cylinder barrel, for by the gas in gas purification cylinder barrel
Discharge；First control valve is installed on the gas inlet pipe；
The small particles of pollution thing monitoring system includes detection cylinder barrel, the detector for detecting small particle concentration and gas row
Outlet pipe；The gas outlet pipe is connected with detection cylinder barrel, and gas outlet pipe is provided with the second control valve；
The gas outlet of the gas purification cylinder barrel is connected between the air inlet with detecting cylinder barrel by capillary connecting tube, the capillary
Connecting tube is provided with the 3rd control valve, and the end of capillary connecting tube connecting detection cylinder barrel air inlet is provided with filter membrane.
2. air pollutants detection means according to claim 1 and air pollution object detecting method, it is characterised in that also
Including active gas handling system, the active gas handling system is connected with gas inlet pipe.
3. air pollutants detection means according to claim 2 and air pollution object detecting method, it is characterised in that also
Including branch pipe and the gas bleeder valve of losing heart, the discouraged branch pipe is connected with capillary connecting tube, and tie point is located proximate to filter membrane, described to lose heart
Valve is arranged on gas outlet.
4. the air pollutants detection means according to claim any one of 1-3, it is characterised in that the detection cylinder barrel bag
Include the first optical transmission window and the second optical transmission window；For detecting that the detector of small particle concentration includes detection light source and optical detection
Device, the detection light source is arranged on the first optical transmission window position, and the photo-detector is arranged on the second optical transmission window position.
5. air pollutants detection means according to claim 4, it is characterised in that the detection light source is infrared light
Source, ultraviolet source or LASER Light Source, the photo-detector are infrared detector corresponding with detection light source, ultraviolet detector or swashed
Photo-detector.
6. air pollutants detection means according to claim 1, it is characterised in that also including automatic control system, institute
Stating automatic control system is used to control piston, the first control valve, the second control valve, the 3rd control valve and detector to carry out air dirt
Contaminate thing automatic detection.
7. air pollutants detection means according to claim 1, it is characterised in that the filter membrane is big for filtering out particle diameter
In the air pollutants equal to 2.5 microns.
8. a kind of air pollution object detecting method, it is characterised in that utilize the air pollutants described in claim any one of 1-7
Detection means is realized, is comprised the following steps：
Step 1, the first control valve of bulky grain piece-rate system is opened, the 3rd control valve installed in capillary connecting tube is closed, makes
Air to be detected enters gas purification cylinder barrel；
Step 2, the first control valve is closed, the 3rd control valve and the second control valve is opened, piston is run in gas purification cylinder barrel
Air to be detected by capillary connecting tube push-in detection cylinder barrel；
Step 3, the 3rd control valve and the second control valve are closed, it is dense to carry out pollutant to the air in detection cylinder barrel using detector
Degree detection.
9. a kind of air pollution object detecting method, it is characterised in that utilize the air pollutants detection means described in claim 2
Realize, comprise the following steps：
Step 1, the first control valve of bulky grain piece-rate system is opened, the 3rd control valve installed in capillary connecting tube is closed, led to
Crossing active gas handling system makes air to be detected enter gas purification cylinder barrel；
Step 2, the first control valve is closed, the 3rd control valve and the second control valve is opened, piston is run in gas purification cylinder barrel
Air to be detected by capillary connecting tube push-in detection cylinder barrel；
Step 3, the 3rd control valve and the second control valve are closed, it is dense to carry out pollutant to the air in detection cylinder barrel using detector
Degree detection；
Step 4, the first control valve, the 3rd control valve and the second control valve are opened, new air is filled with using active gas handling system,
Finally close the first control valve, the 3rd control valve and the second control valve.
10. a kind of air pollution object detecting method, it is characterised in that utilize the air pollution analyte detection dress described in claim 3
Realization is put, is comprised the following steps：
Step 1, the first control valve of bulky grain piece-rate system, the 3rd control valve and branch of losing heart installed in capillary connecting tube are opened
The gas bleeder valve installed on pipe, makes air to be detected enter gas purification cylinder barrel and capillary connecting tube by active gas handling system；
Step 2, the first control valve and gas bleeder valve are closed, the 3rd control valve and the second control valve is opened, piston operation is net by gas
Change the air to be detected in cylinder barrel by capillary connecting tube push-in detection cylinder barrel；
Step 3, the 3rd control valve and the second control valve are closed, it is dense to carry out pollutant to the air in detection cylinder barrel using detector
Degree detection；
Step 4, the first control valve, the 3rd control valve and the second control valve are opened, new air is filled with using active gas handling system,
Finally close the first control valve, the 3rd control valve and the second control valve.
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| CN108225856A (en) * | 2018-03-29 | 2018-06-29 | 重庆山楂树科技有限公司 | Quantitative gas detection device |
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| CN107014726B (en) | 2023-12-26 |
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