CN206489036U - PM2.5 quality and concentration monitor calibrating installations - Google Patents
PM2.5 quality and concentration monitor calibrating installations Download PDFInfo
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Abstract
The utility model is related to air quality monitoring technical field, more particularly, to a kind of PM2.5 quality and concentration monitors calibrating installation, including compressed air source unit, particulate generator, PM10 cutters, mixing pipe, stream splitter and switching valve；The output end of the compressed air source unit is connected with the input of the particulate generator, and the output end of the particulate generator is connected with the first input end of the switching valve, and the second input of the switching valve is connected with ambient atmosphere；The output end of the switching valve is connected with the input of the PM10 cutters, and the output end of the PM10 cutters is connected with the input of the mixing pipe, and the output end for mixing pipe is connected with the input of the stream splitter.The utility model have Detection results it is good, it is efficient and convenient the characteristics of.
Description
Technical field
The utility model is related to air quality monitoring technical field, more particularly, to a kind of PM2.5 quality and concentration monitors
Calibrating installation.
Background technology
PM2.5 refers to particulate matter of the aerodynamics equivalent diameter less than or equal to 2.5 μm in air, also referred to as can enter lung
Particulate matter.PM2.5 particle diameters are small, and residence time length, fed distance rich in substantial amounts of poisonous and harmful substances and in an atmosphere is remote,
Influence thus to health and atmosphere quality is bigger.Fine particle of the particle diameter below 2.5 μm, is difficult to be blocked,
Bronchus can be directly entered by being inhaled into after human body, disturb the gas exchanges of lung, and initiation includes asthma, bronchitis and angiocarpy
Disease in terms of disease.At present, PM2.5 particulate matters are the primary pollutants of China's air, and PM2.5 monitorings and effectively improvement are
The target of Ministry of Environmental Protection's door and national government.
Environmental Protection Department has promulgated HJ618-2011 within 2011《Surrounding air PM10 and PM2.5 bioassay standard》, regulation
The instrument monitored for PM2.5 particle concentrations is particle sampler and particulate matter direct-reading instrument, can be divided into craft by its principle
Analysis method and automatic analysis method (contain：Micro oscillating balance (TEOM) method, beta-ray measurement method, light-scattering measurement).
Either gravimetric method, oscillating balance method, β ray methods or light-scattering measurement, PM2.5 measurement of concetrations pass through
Cutter comes out the particulate separation that aerodynamics equivalent diameter in Atmospheric particulates is less than or equal to 2.5 μm, collects
On filter membrane, analysis is then measured.It can thus be seen that PM2.5 cuttings and concentration measurement performance directly affect PM2.5 mass
The accuracy of concentration monitor, it is therefore desirable to which regularly calibration is carried out to PM2.5 quality and concentration monitors.And to PM2.5 mass
Concentration monitor is calibrated, and is mainly the progress to the cutting characteristic of the PM2.5 cutters in PM2.5 quality and concentration monitors
Detection.But, existing calibrating installation, the effect that the cutting characteristic to PM2.5 cutters is detected is poor.
Utility model content
The purpose of this utility model is to provide a kind of PM2.5 quality and concentration monitors calibrating installation, to solve existing skill
The poor technical problem of the effect that is detected present in art to the cutting characteristic of PM2.5 cutters.
The utility model provides a kind of PM2.5 quality and concentration monitors calibrating installation, including compressed air source unit, particulate matter are sent out
Raw device, PM10 cutters, mixing pipe, stream splitter and switching valve；The output end of the compressed air source unit is sent out with the particulate matter
The input of raw device is connected, and the output end of the particulate generator is connected with the first input end of the switching valve, institute
The second input for stating switching valve is connected with ambient atmosphere；The output end of the switching valve and the input of the PM10 cutters
End is connected, and the output end of the PM10 cutters is connected with the input of the mixing pipe, the output end for mixing pipe
It is connected with the input of the stream splitter.
Further, in addition to the first tonifying Qi pipeline and electrostatic charge neutralization, the input of the first tonifying Qi pipeline and institute
The output end for stating compressed air source unit is connected, and the output end of the first tonifying Qi pipeline is connected with the input of the electrostatic charge neutralization
Logical, the output end of the electrostatic charge neutralization is connected with the first input end of the switching valve.
Further, in addition to the second tonifying Qi pipeline, the input of the second tonifying Qi pipeline and the compressed air source unit
Output end is connected, and the output end of the second tonifying Qi pipeline is connected with the tonifying Qi end of the mixing pipe.
Further, the compressed air source unit includes air compressor, air accumulator, stage high-effective filter and freeze-drying
Machine, wherein, the air compressor, the air accumulator, the stage high-effective filter and the freeze drier are sequentially communicated,
And the freeze drier is also connected with the particulate generator.
Further, baroceptor is installed on the air accumulator, the pressure for detecting gas in the air accumulator.
Further, the top for mixing pipe has inverted cone-shaped structure, and the input of the mixing pipe falls described in
The end of pyramidal structure.
Further, the tonifying Qi end for mixing pipe is extend at the conical surface of the inverted cone-shaped structure, for making from described
Conical surface flowing of the gas of second tonifying Qi pipeline outflow along the inverted cone-shaped structure.
Further, first flowmeter is installed on the first tonifying Qi pipeline.
Further, second flowmeter is installed on the second tonifying Qi pipeline.
The utility model additionally provides a kind of PM2.5 quality and concentration monitors calibrating installation, including compressed air source unit, particulate matter
Generator, PM10 cutters, mixing pipe, stream splitter and switching valve；The output end of the compressed air source unit and the particulate matter
The input of generator is connected, and the output end of the particulate generator is connected with the first input end of the switching valve,
Second input of the switching valve is connected with ambient atmosphere；The output end of the switching valve is defeated with the PM10 cutters
Enter end to be connected, the output end of the PM10 cutters is connected with the input of the mixing pipe, the output for mixing pipe
End is connected with the input of the stream splitter；The switching valve is three-way magnetic valve.
Compared with prior art, the beneficial effects of the utility model are：
The PM2.5 quality and concentration monitor calibrating installations that the utility model is provided, compressed air source unit can provide the sky of cleaning
Gas, a variety of different-grain diameters can be produced by particulate generator and content be definite value single dispersing solid aerosol particle,
That is, the content of the single dispersing solid aerosol particle of every kind of different-grain diameter is definite value；By the switching of switching valve, realize
The sampling of the air provided in the sampling of ambient atmosphere or compressed air source unit, gas is after mixing pipe, then passes through stream splitter
Two output ends introduce a gas into the standard PM2.5 cutters of standard PM2.5 quality and concentration monitors respectively and by school PM2.5
Quality and concentration monitor by school PM2.5 cutters, then comparative analysis standard PM2.5 quality and concentration monitors detection is obtained
PM2.5 concentration values and the PM2.5 concentration values obtained by the detection of school PM2.5 quality and concentration monitors, draw by school PM2.5 cutters
Cutting characteristic whether meet the requirements, to sum up, the utility model can carry out effective inspection to the cutting characteristics of PM2.5 cutters
Survey, and Detection results are good, efficient and convenient.
Brief description of the drawings
, below will be right in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
The accompanying drawing used required in embodiment or description of the prior art is briefly described, it should be apparent that, describe below
In accompanying drawing be some embodiments of the present utility model, for those of ordinary skill in the art, do not paying creativeness
On the premise of work, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation for the PM2.5 quality and concentration monitor calibrating installations that the utility model embodiment one is provided；
Fig. 2 is the structural representation of compressed air source unit in the utility model embodiment one；
Fig. 3 is the structural representation of mixing pipe in the utility model embodiment one；
Fig. 4 is the structural representation for the PM2.5 quality and concentration monitor calibrating installations that the utility model embodiment two is provided.
In figure：
100- standard PM2.5 quality and concentration monitors；101- standard PM2.5 cutters；200- is by school PM2.5 mass concentrations
Monitor；201- is by school PM2.5 cutters；300- compressed air source units；301- particulate generators；302-PM10 cutters；303-
Mix pipe；304- stream splitters；305- switching valves；306- air compressors；307- air accumulators；308- stage high-effectives are filtered
Device；309- freeze driers；310- the first tonifying Qi pipelines；311- first flowmeters；312- the second tonifying Qi pipelines；313- seconds
Gauge；314- inverted cone-shaped structures；315- tonifying Qi end；316- electrostatic charge neutralizations.
Embodiment
The technical solution of the utility model is clearly and completely described below in conjunction with accompanying drawing, it is clear that described
Embodiment is a part of embodiment of the utility model, rather than whole embodiments.Based on the embodiment in the utility model, sheet
The every other embodiment that field those of ordinary skill is obtained under the premise of creative work is not made, belongs to this practicality
Novel protected scope.
, it is necessary to explanation in description of the present utility model, term " " center ", " on ", " under ", it is "left", "right", " perpendicular
Directly ", the orientation or position relationship of the instruction such as " level ", " interior ", " outer " are, based on orientation shown in the drawings or position relationship, to be only
Described for the ease of description the utility model and simplifying, rather than to indicate or imply that signified device or element must have specific
Orientation, with specific azimuth configuration and operation, therefore it is not intended that to limitation of the present utility model.In addition, term " the
One ", " second ", " the 3rd " are only used for describing purpose, and it is not intended that indicating or implying relative importance.
, it is necessary to which explanation, unless otherwise clearly defined and limited, term " are pacified in description of the present utility model
Dress ", " connected ", " connection " should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integratedly
Connection；Can be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected to by intermediary,
It can be the connection of two element internals.For the ordinary skill in the art, above-mentioned art can be understood with concrete condition
Concrete meaning of the language in the utility model.
Embodiment one
Referring to shown in Fig. 1 to Fig. 3, the utility model embodiment one is calibrated there is provided a kind of PM2.5 quality and concentration monitors
Device, including compressed air source unit 300, particulate generator 301, PM10 cutters 302, mixing pipe 303, the and of stream splitter 304
Switching valve；The output end of compressed air source unit 300 is connected with the input of particulate generator 301, particulate generator 301 it is defeated
Go out end with the first input end of switching valve to be connected, the second input of switching valve is connected with ambient atmosphere；Switching valve it is defeated
Go out end with the input of PM10 cutters 302 to be connected, the output end of PM10 cutters 302 and the input phase for mixing pipe 303
Connection, the output end for mixing pipe 303 is connected with the input of stream splitter 304.Specifically, switching valve switches for threeway
Valve；Second input of switching valve is connected by atmosphere duct with ambient atmosphere, can so be realized from ambient atmosphere sampling；
PM10 cutters 302 can come out the particulate separation that aerodynamics equivalent diameter in gas is more than or equal to 10 μm, so
The particulate matter that equivalent aerodynamic diameter is more than or equal to 10 μm just can not enter mixing pipe 303, pass through stream splitter 304
By from mixing during the gas that flows out of pipe 303 is introduced into follow-up different device respectively, i.e., the first output end of stream splitter 304 with
The input of the standard PM2.5 cutters 101 of standard PM2.5 quality and concentration monitors 100 is connected, stream splitter 304
Second output end is connected with by the input by school PM2.5 cutters 201 of school PM2.5 quality and concentration monitors 200.
The PM2.5 quality and concentration monitor calibrating installations that the utility model embodiment one is provided, compressed air source unit 300 can be carried
For clean air, a variety of different-grain diameters can be produced by particulate generator 301 and content is that the single dispersing of definite value is consolidated
State aerosol particle, that is to say, that the content of the single dispersing solid aerosol particle of every kind of different-grain diameter is definite value；Pass through switching
The switching of valve, realizes the sampling of the air provided in the sampling of ambient atmosphere or compressed air source unit 300, gas is by mixing pipe 303
Afterwards, then by two output ends of stream splitter 304 standard PM2.5 quality and concentration monitors 100 are introduced a gas into respectively
Standard PM2.5 cutters 101 and by school PM2.5 quality and concentration monitors 200 by school PM2.5 cutters 201, then compare point
Analysis standard PM2.5 quality and concentration monitors 100 detect obtained PM2.5 concentration values and by school PM2.5 quality and concentration monitors 200
Obtained PM2.5 concentration values are detected, by special by the cutting of school PM2.5 cutters 201 to more just can be derived that for concentration value
Property whether meet the requirements, to sum up, the utility model can carry out effective detection to the cutting characteristics of PM2.5 cutters, and
Detection results are good, efficient and convenient, simple to operate.
In the embodiment, particulate generator 301 is condensation aerosol generator.
In the embodiment, compressed air source unit 300 includes air compressor 306, air accumulator 307, the and of stage high-effective filter 308
Freeze drier 309, wherein, air compressor 306, air accumulator 307, stage high-effective filter 308 and freeze drier 309 according to
Secondary connection, and freeze drier 309 is also connected with particulate generator 301.
Specifically, the output end of air compressor 306 is connected with the input of air accumulator 307, air accumulator 307 it is defeated
Go out end with the input of stage high-effective filter 308 to be connected, the output end and freeze drier of stage high-effective filter 308
309 input is connected, and the output end of freeze drier 309 is connected with the input of particulate generator 301.Air pressure
Air is compressed in air accumulator 307 by contracting machine 306, particle diameter is obtained after being filtered through stage high-effective filter 308 clean less than 0.3 μm
Hydrous matter in clean gas source is first frozen into solid-state by net source of the gas, freeze drier 309, make moisture therein from solid state sublimation into
Gaseous state, so that dry purpose is reached, wherein, the processing tolerance of freeze drier 3096 is 1.5m3/min.The embodiment is optional
In scheme, stage high-effective filter 308 is HEPA filters.
In the embodiment, baroceptor is installed on air accumulator 307, the pressure for detecting gas in air accumulator 307.
PM2.5 cutter cuts characteristic detection device also include controller, air compressor 306, freeze drier 309 respectively with control
Device is electrically connected.By baroceptor gas pressure intensity in air accumulator 307 can control in the range of setting, be follow-up
Process provides continual and steady source of the gas.Detailed process is：Air accumulator 307 and air compressor 306 have automatic regulation function, when
When pressure in air accumulator 307 reaches 0.6MPa, baroceptor sends pressure information to controller, and controller receives air pressure
After the pressure information that sensor is sent, air compressor 306 is set to be stopped, so as to ensure that the pressure of air accumulator 307 is in peace
Gamut.With continuing on for source of the gas, the pressure in air accumulator 307 is gradually reduced, when baroceptor detects air accumulator
When air pressure pressure in 307 drops to 0.4MPa, baroceptor sends pressure information to controller, and controller receives air pressure transmission
After the pressure information that sensor is sent, air compressor 306 is reworked, continue to manufacture dry clean gas, so as to protect
Card continually provides stable source of the gas for follow-up process.
In the embodiment, PM2.5 quality and concentration monitors calibrating installation also includes the first tonifying Qi pipeline 310 and electrostatic is neutralized
Device 316, the input of the first tonifying Qi pipeline 310 is connected with the output end of compressed air source unit 300, the first tonifying Qi pipeline 310 it is defeated
Go out end with the input of electrostatic charge neutralization 316 to be connected, the output end of electrostatic charge neutralization is connected with the first input end of switching valve
It is logical.It can realize that the gas containing particulate matter produced to particulate generator 301 is diluted by the first blowdown pipe, and
The pipeline between the input of switching valve to the input for mixing pipe 303 can be purged, subtracted by the first blowdown pipe
When detecting less, to the measurement error of particulate matter number concentration.The electrostatic that particulate matter adheres to can be eliminated by electrostatic charge neutralization.Can
Selection of land, electrostatic charge neutralization is aerosol electrostatic averager.
In the embodiment, first flowmeter 311 is installed on the first tonifying Qi pipeline 310, for measuring the first tonifying Qi pipeline
Gas flow in 310.
In the embodiment, PM2.5 quality and concentration monitors calibrating installation also includes the second tonifying Qi pipeline 312, the second tonifying Qi
The input of pipeline 312 is connected with the output end of compressed air source unit 300, and the output end of the second tonifying Qi pipeline 312 is with mixing pipe 303
Tonifying Qi end 315 be connected.
In the embodiment, second flowmeter 313 is installed on the second tonifying Qi pipeline 312, for measuring the second tonifying Qi pipeline
Gas flow in 312.
In the embodiment, mixing the top of pipe 303 has inverted cone-shaped structure 314, and the input for mixing pipe 303 is located at back taper
The end of shape structure 314.
Specifically, the tonifying Qi end 315 for mixing pipe 303 is extend at the conical surface of inverted cone-shaped structure 314, for making from second
Conical surface flowing of the gas that tonifying Qi pipeline 312 flows out along inverted cone-shaped structure 314.
By detecting experiment, when the length for mixing pipe 303 is 100mm, the aerosol on the cross section of pipe 303 is mixed
Volume fraction just no longer changes.With the increase of distance, the volume fraction on each section keeps constant.Illustrate aerosol
It can be achieved with being thoroughly mixed in very short distance with the diluent gas entered from tonifying Qi end 315.
In the embodiment, required according to detection, the source of the gas that compressed air source unit 300 is exported should not be containing more than 0.3 μm particle
Thing；Accordingly, it would be desirable to be tested by the source of the gas particle diameter distribution after aerosol particle diameter spectrometer detection process.Aerosol particle diameter spectrometer is to adopt
The typical instrument of aerosol particle sub-count is measured with light scattering principle, 0.3 μm -20 μm of particle size range is measured.
Remove particulate generator 301, the output end of freeze drier 309 is directly connected to the first input of switching valve
End, and one of output end aerosol particle diameter spectrometer of stream splitter 304 is connected.Gas is full of gas circuit, ventilation half
Hour, the residual particles attached in tube wall are removed, particle counting concentration in the measurement of aerosol particle diameter spectrometer now source of the gas is used.
Test result is as shown in table 1.
Table 1 is more than 0.3 μm particle concentration in clean gas source
| Pendulous frequency | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
| More than 0.3 μm particle concentration | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
As can be seen from Table 1, filtered clean gas meets EPA and environmental protection standard in China and source of the gas particulate matter is contained
The requirement of amount.
In the embodiment, in detection process, Polystyrene suspension, i.e. standard particle suspension are dispersed in ultra-pure water
In, so firstly the need of using particle content in the test ultra-pure water of aerosol particle diameter spectrometer 6, to verify in ultra-pure water whether deposit
In the particulate matter of influence experiment.
After one of output end aerosol particle diameter spectrometer of stream splitter 304 is connected, in particulate generator
20mL ultra-pure waters are only added in 301, i.e. condensation aerosol generator, dry clean gas is then passed to, by mixing pipe 303
Afterwards.The result that aerosol particle diameter spectrometer tests 8 times is as shown in table 2.
Table 2 is particulate count range estimation examination (a test volume 15cm3) in ultra-pure water
| Number of times | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
| Total particulate matter number | 0 | 1 | 1 | 0 | 1 | 0 | 1 | 0 |
As can be seen from Table 2, the particulate matter number contained in ultra-pure water does not almost have, relative to the polystyrene of high concentration
Aerosol number can be ignored.Ultra-pure water can as the suspension of condensation aerosol generator decentralized medium.
The volume flow of atomizing generator is controlled by the size for the pressure for controlling the gas in air accumulator 307, through surveying
Corresponding volume flow is 2lpm and 20lpm when examination obtains pressure between 0.5psi and 20psi.In this flow rate zone, pin
The standard particle of fixed volume is added to different-grain diameter, 1.5/cm3 can be reached through the detection of aerosol particle diameter spectrometer, meet
Requirements of the EPA to detection aerosol concentration.
In the embodiment, the operation principle of PM2.5 quality and concentration monitor calibrating installations is：
Ultra-pure water and standard particle supernatant liquid are added in particulate generator 301, i.e. condensation aerosol generator, to produce
Single dispersing solid aerosol particle, wherein, the standard particle of a variety of different-grain diameters, and a variety of differences are contained in standard particle supernatant liquid
The content of the standard particle of particle diameter is definite value；Specifically, in the embodiment, using 8 kinds of aerodynamics of the prior art
Equivalent particle size scope is the standard particle of (1.5-4.0) μm.The content of the standard particle of every kind of different-grain diameter is definite value.
Switching valve is switched to the state being connected of particulate generator 301 and PM10 cutters 302, so, particle
The clean gas that the aerosol particle that thing generator 301 is produced can be provided with compressed air source unit 300 passes through PM10 cutters
302, and ambient atmosphere then can not enter PM10 cutters 302 from switching valve；
Aerosol particle can be with clean gas after mixing pipe 303, then passes through two outputs of stream splitter 304
End introduces a gas into the standard PM2.5 cutters 101 of standard PM2.5 quality and concentration monitors 100 and by school PM2.5 mass respectively
Concentration monitor 200 by school PM2.5 cutters 201, then comparative analysis standard PM2.5 quality and concentration monitors 100 are detected
Obtained PM2.5 concentration values and the PM2.5 concentration values obtained by the detection of school PM2.5 quality and concentration monitors 200；Draw by school
Whether the cutting characteristic of PM2.5 cutters 201 meets the requirements, and finally realizes to by school PM2.5 quality and concentration monitors 200
Calibration.After calibration, switching valve can be switched to ambient atmosphere and be connected with PM10 cutters 302, and particulate generator
301 with the disconnected state of PM10 cutters 302, by the sampling of air to external world, judge whether the monitor after calibrating accords with
Close alignment requirements.
Embodiment two
The PM2.5 quality and concentration monitor calibrating installations that the present embodiment two is provided are the improvement on the basis of embodiment one,
Technology contents not repeated description disclosed in embodiment one, the disclosure of embodiment one is fallen within disclosed in the present embodiment
Hold.
Shown in Figure 4, the embodiment, switching valve 305 is three-way magnetic valve, can be reduced as far as possible by three-way magnetic valve
Influence of the human factor to time of measuring.
Finally it should be noted that：Various embodiments above is only limited to illustrate the technical solution of the utility model, rather than to it
System；Although the utility model is described in detail with reference to foregoing embodiments, one of ordinary skill in the art should
Understand：It can still modify to the technical scheme described in foregoing embodiments, or to which part or whole
Technical characteristic carries out equivalent substitution；And these modifications or replacement, the essence of appropriate technical solution is departed from this practicality newly
The scope of each embodiment technical scheme of type.Although in addition, it will be appreciated by those of skill in the art that some embodiment bags in this
Some features rather than further feature included by including in other embodiments, but the combination of the feature of be the same as Example does not mean
Within the scope of the utility model and form different embodiments.For example, in the following claims, it is required
The one of any of the embodiment of protection mode can use in any combination.
Claims (10)
1. a kind of PM2.5 quality and concentration monitors calibrating installation, it is characterised in that including compressed air source unit, particulate generator,
PM10 cutters, mixing pipe, stream splitter and switching valve；The output end of the compressed air source unit and the particulate generator
Input is connected, and the output end of the particulate generator is connected with the first input end of the switching valve, the switching
Second input of valve is connected with ambient atmosphere；The output end of the switching valve is connected with the input of the PM10 cutters
Logical, the output end of the PM10 cutters is connected with the input of the mixing pipe, the output end of the mixing pipe with it is described
The input of stream splitter is connected.
2. PM2.5 quality and concentration monitors calibrating installation according to claim 1, it is characterised in that also mended including first
Feed channel and electrostatic charge neutralization, the input of the first tonifying Qi pipeline are connected with the output end of the compressed air source unit, described
The output end of first tonifying Qi pipeline is connected with the input of the electrostatic charge neutralization, the output end of the electrostatic charge neutralization and institute
The first input end for stating switching valve is connected.
3. PM2.5 quality and concentration monitors calibrating installation according to claim 1, it is characterised in that also mended including second
Feed channel, the input of the second tonifying Qi pipeline is connected with the output end of the compressed air source unit, the second tonifying Qi pipeline
Output end with it is described mixing pipe tonifying Qi end be connected.
4. PM2.5 quality and concentration monitors calibrating installation according to claim 1, it is characterised in that the compressed air source unit
Including air compressor, air accumulator, stage high-effective filter and freeze drier, wherein, the air compressor, the gas storage
Tank, the stage high-effective filter and the freeze drier are sequentially communicated, and the freeze drier also with the particulate matter
Generator is connected.
5. PM2.5 quality and concentration monitors calibrating installation according to claim 4, it is characterised in that on the air accumulator
Baroceptor is installed, the pressure for detecting gas in the air accumulator.
6. PM2.5 quality and concentration monitors calibrating installation according to claim 3, it is characterised in that the mixing pipe
Top has inverted cone-shaped structure, and the input of the mixing pipe is located at the end of the inverted cone-shaped structure.
7. PM2.5 quality and concentration monitors calibrating installation according to claim 6, it is characterised in that the mixing pipe
Tonifying Qi end is extend at the conical surface of the inverted cone-shaped structure, and the gas for making to flow out from the second tonifying Qi pipeline falls described in
The conical surface flowing of pyramidal structure.
8. PM2.5 quality and concentration monitors calibrating installation according to claim 2, it is characterised in that first tonifying Qi
First flowmeter is installed on pipeline.
9. PM2.5 quality and concentration monitors calibrating installation according to claim 3, it is characterised in that second tonifying Qi
Second flowmeter is installed on pipeline.
10. a kind of PM2.5 quality and concentration monitors calibrating installation, it is characterised in that including compressed air source unit, particulate generator,
PM10 cutters, mixing pipe, stream splitter and switching valve；The output end of the compressed air source unit and the particulate generator
Input is connected, and the output end of the particulate generator is connected with the first input end of the switching valve, the switching
Second input of valve is connected with ambient atmosphere；The output end of the switching valve is connected with the input of the PM10 cutters
Logical, the output end of the PM10 cutters is connected with the input of the mixing pipe, the output end of the mixing pipe with it is described
The input of stream splitter is connected；The switching valve is three-way magnetic valve.
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| CN201621463092.8U CN206489036U (en) | 2016-12-28 | 2016-12-28 | PM2.5 quality and concentration monitor calibrating installations |
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| CN201621463092.8U CN206489036U (en) | 2016-12-28 | 2016-12-28 | PM2.5 quality and concentration monitor calibrating installations |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106769728A (en) * | 2016-12-28 | 2017-05-31 | 中国计量科学研究院 | PM2.5 quality and concentration monitor calibrating installations |
| CN107655800A (en) * | 2017-10-09 | 2018-02-02 | 上海迪勤智能科技有限公司 | A kind of PM2.5 on-line monitoring systems and its check scaling method |
| CN107990928A (en) * | 2017-11-22 | 2018-05-04 | 北京市计量检测科学研究院 | Detection method, system and the device of the physical efficiencies of flcating germ sampling head sampling |
| CN114486440A (en) * | 2022-01-27 | 2022-05-13 | 山东大学 | Particulate matter mixing system and detection instrument calibration method |
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2016
- 2016-12-28 CN CN201621463092.8U patent/CN206489036U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106769728A (en) * | 2016-12-28 | 2017-05-31 | 中国计量科学研究院 | PM2.5 quality and concentration monitor calibrating installations |
| CN107655800A (en) * | 2017-10-09 | 2018-02-02 | 上海迪勤智能科技有限公司 | A kind of PM2.5 on-line monitoring systems and its check scaling method |
| CN107990928A (en) * | 2017-11-22 | 2018-05-04 | 北京市计量检测科学研究院 | Detection method, system and the device of the physical efficiencies of flcating germ sampling head sampling |
| CN114486440A (en) * | 2022-01-27 | 2022-05-13 | 山东大学 | Particulate matter mixing system and detection instrument calibration method |
| CN114486440B (en) * | 2022-01-27 | 2023-06-20 | 山东大学 | Particulate matter mixing system and detecting instrument calibration method |
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