CN202582951U - Calibration system of particulate matter cutter - Google Patents
Calibration system of particulate matter cutter Download PDFInfo
- Publication number
- CN202582951U CN202582951U CN 201220080438 CN201220080438U CN202582951U CN 202582951 U CN202582951 U CN 202582951U CN 201220080438 CN201220080438 CN 201220080438 CN 201220080438 U CN201220080438 U CN 201220080438U CN 202582951 U CN202582951 U CN 202582951U
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- cutter
- mixing bunker
- particle
- calibration system
- controller
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Abstract
The utility model discloses a calibration system of a particulate matter cutter. The calibration system is used for calibrating the particulate matter cutter. The particulate matter cutter is used for separating particulate matter in the air. The calibration system comprises an air source, a gas pipe, a control system and a testing chamber, wherein the air source is communicated with the testing chamber through the air pipe; the control system comprises a controller, a flow controller, a temperature controller and a humidity controller, and the flow controller, the temperature controller and the humidity controller are all in electric connection with the controller; the testing chamber comprises a mixing bin and a suspension bin which are communicated with each other. A given amount of particulate matter is stored in the mixing bin and is mixed with air from the air source in the mixing bin to form a standard sample at definite concentration, the standard sample enters the suspension bin, is cushioned by the suspension bin and is then sampled by the cutter to be calibrated, and calibration for the cutter is realized by comparing the standard sample at the definite concentration with the data collected by the cutter. The calibration system of the particulate matter cutter is high in accuracy and efficiency.
Description
Technical field
The utility model relates to a kind of particle cutter field, relates in particular to the calibration system of a kind of high precision, dynamical particle cutter.
Background technology
Along with the continuous development of industry, environment for human survival is destroyed, and wherein the situation is tense in air pollution, and airborne suspended particulate substance can cause grey haze weather.
Weather scientist and medical expert think, the grey haze weather that is caused by fine particle is to the harm of health even bigger than sandstorm.The particle of particle diameter more than 10 microns can be blocked in outside people's the nose; The particle of particle diameter between 2.5 microns to 10 microns can get into the upper respiratory tract, but part can excrete through sputum etc., also can be stopped by the inner fine hair of nasal cavity in addition, and be less relatively to human health damage; And particle diameter is at the fine particle below 2.5 microns, and diameter is equivalent to human hair's 1/10 size, and difficult quilt stops.Can directly get into bronchus after being inhaled into human body, disturb the gas exchange of lung, cause the disease that comprises aspects such as asthma, bronchitis and cardiovascular disease.
Atmospheric aerosol is a content component seldom in the earth atmosphere composition, but it all has material impact to radiation balance (and then to Global climate change), stratosphere and the tropospheric chemical reaction etc. of air quality, visibility, acid deposition, cloud and precipitation, atmosphere.A large amount of epidemiological studies is observed health infringement (particulate matter, the degree of correlation between PM) is significantly higher than coarseparticulate with being exposed to wherein fine particle PM2.5 over nearest more than 10 years.PM2.5 is also referred to as and can goes into the lung particle, is meant that atmosphere air kinetic diameter is less than or equal to 2.5 microns fine particle.The PM2.5 particle diameter is little, is rich in a large amount of poisonous, objectionable impuritiess and the residence time in atmosphere is long, fed distance is far away, not only air quality and visibility etc. is had significant effects, and serious threat is to human beings'health.PM2.5 can directly get into human bronchus even reach alveolar, and for a long time attached to bronchus and lung, the metabolism of human body self can't be rejected to it external.Mainly be that respiratory system and cardiovascular system are damaged, comprise respiratory tract irriate, cough, expiratory dyspnea, reduction PFT, increase the weight of asthma, cause chronic bronchitis, arrhythmia cordis, non-lethal heart disease, heart and lung diseases patient premature dead.The concentration of PM2.5 is higher than 10 μ g/m3 for a long time in the atmosphere, and mortality risk just begins to rise.Every increase by the 10 μ g/m3 of concentration, total mortality risk, heart and lung diseases mortality risk and the mortality risk of lung cancer rises 4%, 6% and 8% respectively.
The source of PM2.5 has 3 kinds in the atmosphere: (1) natural source particle comprises volcanic debris, dirt ash, forest fire, the exposed face of land, sandstorm, wind airborne dust soil, floating sea salt, pollen, fungal spore, bacterium or the like.(2) original suspended particulate substance, the suspended particulate substance that bag hand fuel-burning power plant, petrochemical factory and general factory incomplete combustion are produced.(3) derivative particle suspensions, oxysulfide or oxides of nitrogen, the organic compound that comprises factory, motor vehicle, petrochemical industry discharging receive the fine particle that the sulfate, nitrate, organic compound and other compound that are produced behind the solar radiation interact and form.Wherein motor vehicle is the main source of PM2.5.
At present, be widely used in the method for measuring PM2.5 in the world and have three kinds: gravimetric method, β radiation absorption method and trace vibration sedimentation balance method.The operation steps of these methods mainly was divided into for two steps, earlier PM2.5 and bigger particulate separation, measured the weight of the PM2.5 that separates then.Aspect PM2.5 separation and capture; Researched and developed the PM2.5 cutter; Its principle is under the effect of aspiration pump, and when air flow through cutter with certain flow velocity, those bigger particles were because inertia is big; Hit being coated with on the oily parts and be trapped, the less PM2.5 of inertia then can the overwhelming majority along with air passes through smoothly.But, with regard to the trapping ability and the effect of the cutter of PM2.5, diameter neither all can pass through less than 2.5 microns particle, is that 2.5 microns particle also has 50% probability can pass through cutter just; Diameter is not to be trapped entirely greater than 2.5 microns particle, therefore utilizes PM2.5 cutter separation and collection fine particle, may have deviation between different on-the-spot collection statisticses and the actual value, causes and over-evaluates or underestimate.Standard-required according to " the gravimetry method of surrounding air PM10 and PM2.5 "; The percent of pass of kinetic diameter particle more than 3.0 microns needs less than 16%; And the percent of pass of particle below 2.1 microns is greater than 84%, and then definite result drops on a believable interval.
The particle cutter is that to be used for diameter be that a dust granules in the special value scope separates; For example the PM2.5 cutter is that the particle of diameter smaller or equal to 2.5 microns separated; Cutter must be through calibration before using; The method of testing of current PM2.5 calculate its result through adopting mathematical formulae to convert, so can there be bigger error in its measurement result for through measuring the size of flow, cutter.
Therefore, need the calibration system of a kind of high precision, dynamical particle cutter badly.
The utility model content
The purpose of the utility model provides the calibration system of a kind of high precision, dynamical particle cutter.
To achieve these goals; The technical scheme that the utility model provides is: the calibration system that a kind of particle cutter is provided; Be used to calibrate the particle cutter; Said cutter is used for the particle of separation of air, and it comprises: source of the gas, gas piping, control system and experiment storehouse, and said source of the gas is communicated with said experiment storehouse through said gas piping; Said control system comprises controller, flow controller, temperature controller and humidity controller; Said flow controller, temperature controller and humidity controller all electrically connect with said controller, and said experiment storehouse comprises mixing bunker and the suspension storehouse that is interconnected, and said mixing bunker is built-in with the particle of determined number; Said mixing bunker mixes the standard model that forms exact concentration with the gas of said source of the gas output with said particle; Said standard model gets into said suspension storehouse, and said suspension storehouse cushions the back to said standard model and supply cutter to be calibrated to sample, and comes cutter to be calibrated is calibrated through the standard model and the collected data of cutter to be calibrated of contrast exact concentration.
Said mixing bunker is inverted cone-shaped; Bottom near said mixing bunker offers the admission piece that runs through said mixing bunker sidewall uniformly; Also include the mixed airflow generating means; Said mixed airflow generating means comprises first blowning installation and second blowning installation, and said first blowning installation is communicated with said admission piece and is used for producing air-flow upwards in the said mixing bunker, and said second blowning installation is arranged at the center of top place of said mixing bunker to producing downward air-flow in the said mixing bunker.
The speed of the updraft that said first blowning installation produces is 32～38 meter per seconds, and the speed of the downdraught that said second blowning installation produces is 10～14 meter per seconds.
Said suspension storehouse is inverted cone-shaped; Top near said mixing bunker and suspension storehouse all offers connector; Said mixing bunker is communicated with said suspension storehouse through said connector, and the bottom extension in said suspension storehouse also is bent to form the gas outlet that is communicated with said cutter.
Said mixing bunker also includes gland bonnet, and the upper end of said mixing bunker is uncovered type, and the upper end that said gland bonnet is covered on said mixing bunker seals said mixing bunker, and said second blowning installation is installed on the said gland bonnet.
Said experiment storehouse also includes fixed support, and said mixing bunker and suspension storehouse all are fixed on the said fixed support.
Said flow controller, temperature controller and humidity controller all are installed on the said gas piping.
Said control system also comprises flowmeter, and said flowmeter is arranged on the said gas piping.
Said control system also comprises the static regulator, and said static regulator is arranged on the said gas piping.
Said source of the gas provides clean gas.
Compared with prior art; In the calibration system of the utility model particle cutter; Said mixing bunker is used for the gas of said source of the gas output is mixed the standard model that forms exact concentration with said particle; Said standard model gets into said suspension storehouse, and said suspension storehouse is used for that said standard model is cushioned the back and supplies said cutter to sample.The focusing on of the calibration system of the utility model particle cutter is mixed into standard model with particle; Then said standard model is got into cutter to be calibrated, calibrate through the standard model and the collected data of cutter to be calibrated of contrast concentration known.
Through following description and combine accompanying drawing, it is more clear that the utility model will become, and these accompanying drawings are used to explain the embodiment of the utility model.
Description of drawings
Fig. 1 is the frame diagram of an embodiment of the calibration system of the utility model particle cutter.
Fig. 2 is the structural representation in experiment storehouse of the calibration system of particle cutter as shown in Figure 1.
Fig. 3 is the distribution plan of the vertical movement of the utility model mixing bunker internal standard sample.
Fig. 4 is the distribution plan of the tangential movement of the utility model mixing bunker internal standard sample.
Illustrate: the calibration system 100 of particle cutter, source of the gas 10, gas piping 20, control system 30, controller 31, flow controller 32; Temperature controller 33, humidity controller 34, flowmeter 35, static regulator 36, experiment storehouse 40; Mixing bunker 40a, suspension storehouse 40b, admission piece 41, the first blowning installation 42a, the second blowning installation 42b; Interface 43, gas outlet 44, gland bonnet 45, fixed support 46, joint 47.
Embodiment
With reference now to accompanying drawing, describe the embodiment of the utility model, the similar elements label is represented similar elements in the accompanying drawing.As stated; Shown in Fig. 1-4; The calibration system 100 of the particle cutter that the utility model provides; Be used to calibrate the particle cutter; At first explain particle cutter down, the particle cutter is that to be used for diameter be that a dust granules in the special value scope separates, and for example the PM2.5 cutter is that the particle of diameter smaller or equal to 2.5 microns separated; Cutter must be through calibration before using; The calibration system 100 of particle cutter comprises: source of the gas 10, gas piping 20, control system 30 and experiment storehouse 40, and said source of the gas 10 is communicated with said experiment storehouse 40 through said gas piping 20, and said control system 30 comprises controller 31, flow controller 32, temperature controller 33 and humidity controller 34; Said flow controller 32, temperature controller 33 and humidity controller 34 all electrically connect with said controller 31; Said controller 31 carries out the control of flow, temperature and humidity through the gases in said flow controller 32, temperature controller 33 and 34 pairs of said gas pipings 20 of humidity controller, and said experiment storehouse 40 comprises mixing bunker 40a and the suspension storehouse 40b that is interconnected, and said mixing bunker 40a is built-in with the particle of determined number (figure is last not to be looked); Said mixing bunker 40a mixes the standard model that forms exact concentration with the gas of said source of the gas 10 outputs with said particle; Said standard model gets into said suspension storehouse 40b, and said suspension storehouse 40b cushions the back to said standard model and supply cutter to be calibrated to sample, and comes cutter to be calibrated is calibrated through the standard model and the collected data of cutter to be calibrated of contrast exact concentration.
As shown in Figure 2, the warehouse of said mixing bunker 40a and suspension storehouse 40b all adopts inverted pyramidal structure design, and its effect has: 1, owing to be cone, therefore the corner can not occur, thereby reduce the existence at dead angle, particle can not residued in wherein; 2, because it is cone shape, therefore can be when closing input source of the gas 10, let the particle natural sedimentation, can reclaim use to the standard standard model.In addition; Top near said mixing bunker 40a and suspension storehouse 40b all offers connector 43; Said mixing bunker 40a is communicated with said suspension storehouse 40b through said connector 43, and the bottom extension of said suspension storehouse 40b also is bent to form the gas outlet 44 that is communicated with said cutter.
As shown in Figure 2; The bottom of said mixing bunker 40a is progressively to tighten up makes whole said mixing bunker 40a become inverted cone-shaped; Bottom near said mixing bunker 40a offers the admission piece 41 that runs through said mixing bunker 40a sidewall uniformly; In the present embodiment, offer 8 said admission pieces 41, also include mixed airflow generating means (figure is last not to be looked); Said mixed airflow generating means comprises the first blowning installation 42a and the second blowning installation 42b; The said first blowning installation 42a is communicated with each said admission piece 41 and is used for producing air-flow upwards in the said mixing bunker 40a, and the said second blowning installation 42b is arranged at the center of top place of said mixing bunker 40a to producing downward air-flow in the said mixing bunker 40a, shown in Fig. 2-4; The speed of the updraft that the said first blowning installation 42a produces is 32～38 meter per seconds, and the speed of the downdraught that the said second blowning installation 42b produces is 10～14 meter per seconds.One week of bottom around said mixing bunker 40a produces the air-flow of powerful rising uniformly; And because the air-flow that rises is to tilt to rise, and the middle part then produces the air-flow of sinking, the air-flow that therefore rises will rise in the shape of a spiral; Therefore; In fact said mixing bunker 40a inside will produce like Fig. 2, the wind spout shown in 3 and 4, and when particle was positioned over the wind spout below, particle can be attracted upwards; Through repeatedly letting standard model evenly be mixed among the current air-flow after the rotation, form standard model.When air-flow rotates to the top; The part air-flow can be owing to inertia breaks away from the wind body; Therefore, standard model will get into said suspension storehouse 40b through said interface 43; The standard model particle is delivered to suspension storehouse 40b through the buffering back through 44 discharges of said gas outlet in said suspension storehouse 40b, get into particle cutter to be measured.
As shown in Figure 2; Said mixing bunker 40a also includes gland bonnet 45; The upper end of said mixing bunker 40a is uncovered type, and the upper end that said gland bonnet 45 is covered on said mixing bunker 40a seals said mixing bunker 40a, and said gland bonnet 45 can be opened; So that whole said mixing bunker 40a is cleaned, the said second blowning installation 42b is installed in the centre of said gland bonnet 45.
As shown in Figure 2, said experiment storehouse 40 also includes fixed support 46, and said mixing bunker 40a and suspension storehouse 40b all are fixed on the said fixed support 46, through said support 46 is set, can guarantee that said experiment storehouse 40 is in stable status in calibration process.
As shown in Figure 1, said control system 30 also comprises flowmeter 35, and said flowmeter 35 is arranged on the said gas piping 20,, can observe the size of the flow on the said gas piping 20 intuitively through said flowmeter 30.
As shown in Figure 1, said control system 30 also comprises static regulator 36, and said static regulator 36 is arranged on the said gas piping 20.
As shown in Figure 2, what set gradually on the said gas piping 20 is the joint 47 that flowmeter 35, flow controller 32, temperature controller 33, humidity controller 34, static regulator 36, mixing bunker 40a, suspension storehouse 40b and being used for is connected with cutter or sampling thief.
Said source of the gas 10 provides clean gas.
In conjunction with Fig. 1-4; In the calibration system 100 of the utility model particle cutter; Said mixing bunker 40a is used for the gas of said source of the gas 10 outputs is mixed the standard model that forms exact concentration with said particle; Said standard model gets into said suspension storehouse 40b, and said suspension storehouse 40b is used for that said standard model is cushioned the back and supplies said cutter to sample.The focusing on of the calibration system 100 of the utility model particle cutter is mixed into standard model with particle; Then said standard model is got into cutter to be calibrated, calibrate through the standard model and the collected data of cutter to be calibrated of contrast concentration known.
The calibration system 100 of the particle cutter that the utility model provides can be calibrated PM2.5 cutter and other cutters.The above disclosed preferred embodiment that is merely the utility model can not limit the interest field of the utility model certainly with this, so according to the equivalent variations that the utility model claim is done, still belong to the scope that the utility model is contained.
Claims (10)
1. the calibration system of a particle cutter; Be used to calibrate the particle cutter, said cutter is used for the particle of separation of air, it is characterized in that; Comprise: source of the gas, gas piping, control system and experiment storehouse; Said source of the gas is communicated with said experiment storehouse through said gas piping, and said control system comprises controller, flow controller, temperature controller and humidity controller, and said flow controller, temperature controller and humidity controller all electrically connect with said controller; Said experiment storehouse comprises mixing bunker and the suspension storehouse that is interconnected; Said mixing bunker is built-in with the particle of determined number, and said mixing bunker mixes the standard model that forms exact concentration with the gas of said source of the gas output with said particle, and said standard model gets into said suspension storehouse; And said suspension storehouse is cushioned the back to said standard model and is supplied cutter to be calibrated to sample, and comes cutter to be calibrated is calibrated through the standard model and the collected data of cutter to be calibrated of contrast exact concentration.
2. the calibration system of particle cutter as claimed in claim 1; It is characterized in that: said mixing bunker is inverted cone-shaped; Bottom near said mixing bunker offers the admission piece that runs through said mixing bunker sidewall uniformly; Also include the mixed airflow generating means; Said mixed airflow generating means comprises first blowning installation and second blowning installation, and said first blowning installation is communicated with said admission piece and is used for producing air-flow upwards in the said mixing bunker, and said second blowning installation is arranged at the center of top place of said mixing bunker to producing downward air-flow in the said mixing bunker.
3. the calibration system of particle cutter as claimed in claim 2 is characterized in that: the speed of the updraft that said first blowning installation produces is 32～38 meter per seconds, and the speed of the downdraught that said second blowning installation produces is 10～14 meter per seconds.
4. the calibration system of particle cutter as claimed in claim 1; It is characterized in that: said suspension storehouse is inverted cone-shaped; Top near said mixing bunker and suspension storehouse all offers connector; Said mixing bunker is communicated with said suspension storehouse through said connector, and the bottom extension in said suspension storehouse also is bent to form the gas outlet that is communicated with said cutter.
5. the calibration system of particle cutter as claimed in claim 1; It is characterized in that: said mixing bunker also includes gland bonnet; The upper end of said mixing bunker is uncovered type; The upper end that said gland bonnet is covered on said mixing bunker seals said mixing bunker, and said second blowning installation is installed on the said gland bonnet.
6. the calibration system of particle cutter as claimed in claim 1 is characterized in that: said experiment storehouse also includes fixed support, and said mixing bunker and suspension storehouse all are fixed on the said fixed support.
7. the calibration system of particle cutter as claimed in claim 1 is characterized in that: said flow controller, temperature controller and humidity controller all are installed on the said gas piping.
8. the calibration system of particle cutter as claimed in claim 1 is characterized in that: said control system also comprises flowmeter, and said flowmeter is arranged on the said gas piping.
9. the calibration system of particle cutter as claimed in claim 1 is characterized in that: said control system also comprises the static regulator, and said static regulator is arranged on the said gas piping.
10. the calibration system of particle cutter as claimed in claim 1 is characterized in that: said source of the gas provides clean gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220080438 CN202582951U (en) | 2012-03-06 | 2012-03-06 | Calibration system of particulate matter cutter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220080438 CN202582951U (en) | 2012-03-06 | 2012-03-06 | Calibration system of particulate matter cutter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202582951U true CN202582951U (en) | 2012-12-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220080438 Expired - Lifetime CN202582951U (en) | 2012-03-06 | 2012-03-06 | Calibration system of particulate matter cutter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202582951U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102607894A (en) * | 2012-03-06 | 2012-07-25 | 深圳市华测检测技术股份有限公司 | Calibration system of particle cutter |
| CN104359724A (en) * | 2014-10-29 | 2015-02-18 | 中国环境科学研究院 | Polydispersity calibration system of particulate matter equipment |
| CN104748994A (en) * | 2015-03-31 | 2015-07-01 | 中国科学院合肥物质科学研究院 | PM2.5 cutter cutting efficiency detection device and detection method thereof |
-
2012
- 2012-03-06 CN CN 201220080438 patent/CN202582951U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102607894A (en) * | 2012-03-06 | 2012-07-25 | 深圳市华测检测技术股份有限公司 | Calibration system of particle cutter |
| CN102607894B (en) * | 2012-03-06 | 2015-03-11 | 深圳市华测检测技术股份有限公司 | Calibration system of particle cutter |
| CN104359724A (en) * | 2014-10-29 | 2015-02-18 | 中国环境科学研究院 | Polydispersity calibration system of particulate matter equipment |
| CN104748994A (en) * | 2015-03-31 | 2015-07-01 | 中国科学院合肥物质科学研究院 | PM2.5 cutter cutting efficiency detection device and detection method thereof |
| CN104748994B (en) * | 2015-03-31 | 2017-06-23 | 中国科学院合肥物质科学研究院 | A kind of PM2.5 cutter cuts efficiency test device and its method of testing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20121205 Effective date of abandoning: 20150311 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20121205 Effective date of abandoning: 20150311 |
|
| RGAV | Abandon patent right to avoid regrant |