CN102607893A - Calibrating system of particulate matter cutter - Google Patents
Calibrating system of particulate matter cutter Download PDFInfo
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- CN102607893A CN102607893A CN2012100564787A CN201210056478A CN102607893A CN 102607893 A CN102607893 A CN 102607893A CN 2012100564787 A CN2012100564787 A CN 2012100564787A CN 201210056478 A CN201210056478 A CN 201210056478A CN 102607893 A CN102607893 A CN 102607893A
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Abstract
The invention discloses a calibrating system of a particulate matter cutter, which is used for calibrating the particulate matter cutter. The particulate matter cutter is used for separating particulate matters in the air. The calibrating system comprises an experiment cabin which comprises a main cabin body, a first blowing device and a second blowing device, the upper end face of the main cabin body is provided with a feeding hole for enabling the particulate matters to enter, the side wall of the main cabin body is provided with a plurality of inlet nozzles communicated with the main cabin body, the first blowing device is communicated with the main cabin body through the feeding hole and is used for blowing the particulate matters to the main cabin body, the second blowing device is communicated with the main cabin body through the inlet nozzles and is used for blowing air to the main cabin body so that the particulate matters are mixed with the air provided by an air source in the main cabin body to form a standard sample with accurate concentration so as to be sampled by a cutter to be calibrated, and the cutter to be calibrated is calibrated through comparing the standard sample with accurate concentration with the data collected by the cutter to be calibrated. The calibrating system of the particulate matter cutter has high precision and high efficiency.
Description
Technical field
The present invention relates to a kind of particle cutter field, relate 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.
Summary of the invention
The calibration system that the purpose of this invention is to provide a kind of high precision, dynamical particle cutter.
To achieve these goals; Technical scheme provided by the invention is: a kind of calibration system of particle cutter is provided, is used to calibrate the particle cutter, said cutter is used for the particle of separation of air; It comprises: 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, first flow controller, temperature controller and humidity controller, and said first flow controller, temperature controller and humidity controller all electrically connect with said controller; Said experiment storehouse comprises main cabin body, first blowning installation and second blowning installation; The upper surface of said main cabin body offers the charging aperture that lets particle get into, and the sidewall of said main cabin body is provided with the admission piece that is communicated with said main cabin body, and said first blowning installation is communicated with main cabin body through said charging aperture; And particle blown into said main cabin body; Said second blowning installation is communicated with said main cabin body through said admission piece, and in the body of said main cabin, blows, and the air mixed that said particle is provided with said source of the gas in the body of said main cabin forms the standard model of exact concentration; Supply cutter to be calibrated to sample, come cutter to be calibrated is calibrated through the standard model and the collected data of cutter to be calibrated of contrast exact concentration.
Said main cabin body is cylindric.
The tangential of said admission piece outer wall of body along said main cabin is communicated with said main cabin body, and in the body of said main cabin, blows, and makes body inside, said main cabin form the air-flow of annular.
The speed of the air-flow that said first blowning installation produces is 10～14 meter per seconds, and the speed that said second blowning installation produces air-flow is 32～38 meter per seconds.
Said first flow controller, temperature controller and humidity controller all are installed on the said gas piping.
The calibration system of said particle cutter also comprises flowmeter, and said flowmeter is arranged on the said gas piping.
Said control system also comprises second flow controller, and said source of the gas is connected with said charging aperture through said gas piping through second flow controller.
Said source of the gas provides clean gas.
The calibration system of said particle cutter also comprises the static regulator, and said static regulator is arranged on the said gas piping.
The bottom of said main cabin body is provided with the gas outlet, is connected with on the said gas outlet to be used for the joint that is connected with cutter.
Compared with prior art, in the calibration system of particle cutter of the present invention, said main cabin body is used for the gas of said source of the gas output is mixed the standard model that forms exact concentration with said particle, and supplies said cutter to sample.The focusing on of the calibration system of particle cutter of the present invention 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 present invention will become, and these accompanying drawings are used to explain embodiments of the invention.
Description of drawings
Fig. 1 is the frame diagram of an embodiment of the calibration system of particle cutter of the present invention.
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 vertical view of Fig. 2.
Illustrate: the calibration system 100 of particle cutter, source of the gas 10, gas piping 20, control system 30, controller 31; First flow controller 32, temperature controller 33, humidity controller 34, flowmeter 35; Static regulator 36, the second flow controllers 37, experiment storehouse 40, main cabin body 41; Charging aperture 44, admission piece 45, gas outlet 46, joint 47.
Embodiment
With reference now to accompanying drawing, describe embodiments of the invention, the similar elements label is represented similar elements in the accompanying drawing.As stated; Shown in Fig. 1-3; The calibration system 100 of particle cutter provided by the invention is used to calibrate the particle cutter, and said cutter is used for the particle of separation of air; It comprises: source of the gas 10, gas piping 20, control system 30 and experiment storehouse 40; 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, first flow controller 32, temperature controller 33 and humidity controller 34, and said first flow controller 32, temperature controller 33 and humidity controller 34 all electrically connect with said controller 31; Said experiment storehouse 40 comprises main cabin body 41, first blowning installation (figure is last not to be looked) and second blowning installation (figure is last not to be looked); The upper surface of said main cabin body 41 offers the charging aperture 44 that lets particle get into, and the sidewall of said main cabin body 41 is provided with 3 admission pieces 45 that are communicated with said main cabin body 41, and said first blowning installation is communicated with main cabin body 41 through said charging aperture 44; And particle blown into said main cabin body 41; Said second blowning installation is communicated with said main cabin body 41 through said admission piece 45, and in said main cabin body 41, blows, and the air mixed that said particle is provided with said source of the gas 10 in said main cabin body 41 forms the standard model of exact concentration; Supply cutter to be calibrated to sample, come 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, said main cabin body 41 is cylindric.
Like Fig. 2, shown in 3, the tangential of said admission piece 45 outer wall of body 41 along said main cabin is communicated with said main cabin body 41, and in said main cabin body 41, blows, and makes body 41 inside in said main cabin form the air-flows of annular.
The speed of the air-flow that said first blowning installation produces is 10～14 meter per seconds, and the speed that said second blowning installation produces air-flow is 32～38 meter per seconds.
As shown in Figure 1, said first flow controller 32, temperature controller 33 and humidity controller 34 all are installed on the said gas piping 20.
Like Fig. 1, shown in 2, said control system 30 also comprises second flow controller 37, and said source of the gas 10 is connected with said charging aperture 44 through said gas piping 20 through second flow controller 37.
As shown in Figure 1, said source of the gas 10 is a clean gas.
As shown in Figure 1, the calibration system 100 of said particle cutter also comprises static regulator 36, and said static regulator 36 is arranged on the said gas piping 20.
As shown in Figure 1, the calibration system 100 of said particle cutter also comprises flowmeter 35, and said flowmeter 35 is arranged on the said gas piping 20.
Like Fig. 1, shown in 2, the bottom of said main cabin body 41 is provided with gas outlet 46, is connected with on the said gas outlet 46 to be used for the joint 47 that is connected with cutter.
In conjunction with Fig. 1-3, in the calibration system 100 of particle cutter of the present invention, said main cabin body 41 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, and supplies said cutter to sample.The focusing on of the calibration system 100 of particle cutter of the present invention 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 particle cutter provided by the invention can be calibrated PM2.5 cutter and other cutters.The above disclosed the preferred embodiments of the present invention that are merely can not limit the present invention's interest field certainly with this, so according to the equivalent variations that claim of the present invention is done, still belong to the scope that the present invention 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, first flow controller, temperature controller and humidity controller, and said first flow controller, temperature controller and humidity controller all electrically connect with said controller; Said experiment storehouse comprises main cabin body, first blowning installation and second blowning installation; The upper surface of said main cabin body offers the charging aperture that lets particle get into, and the sidewall of said main cabin body is provided with the admission piece that is communicated with said main cabin body, and said first blowning installation is communicated with main cabin body through said charging aperture; And particle blown into said main cabin body; Said second blowning installation is communicated with said main cabin body through said admission piece, and in the body of said main cabin, blows, and the air mixed that said particle is provided with said source of the gas in the body of said main cabin forms the standard model of exact concentration; Supply cutter to be calibrated to sample, come 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 is characterized in that: said main cabin body is cylindric.
3. the calibration system of particle cutter as claimed in claim 1; It is characterized in that: the tangential of said admission piece outer wall of body along said main cabin is communicated with said main cabin body; And in the body of said main cabin, blow, make body inside, said main cabin form the air-flow of annular.
4. the calibration system of particle cutter as claimed in claim 1 is characterized in that: the speed of the air-flow that said first blowning installation produces is 10～14 meter per seconds, and the speed that said second blowning installation produces air-flow is 32～38 meter per seconds.
5. the calibration system of particle cutter as claimed in claim 1 is characterized in that: said first flow controller, temperature controller and humidity controller all are installed on the said gas piping.
6. the calibration system of particle cutter as claimed in claim 1 is characterized in that: said control system also comprises second flow controller, and said source of the gas is connected with said charging aperture through said gas piping through second flow controller.
7. the calibration system of particle cutter as claimed in claim 1 is characterized in that: said source of the gas provides clean gas.
8. the calibration system of particle cutter as claimed in claim 1 is characterized in that: the calibration system of said particle cutter also comprises the static regulator, and said static regulator is arranged on the said gas piping.
9. the calibration system of particle cutter as claimed in claim 1 is characterized in that: the bottom of said main cabin body is provided with the gas outlet, is connected with on the said gas outlet to be used for the joint that is connected with cutter.
10. the calibration system of particle cutter as claimed in claim 1 is characterized in that: the calibration system of said particle cutter also comprises flowmeter, and said flowmeter is arranged on the said gas piping.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210056478.7A CN102607893B (en) | 2012-03-06 | 2012-03-06 | Calibrating system of particulate matter cutter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210056478.7A CN102607893B (en) | 2012-03-06 | 2012-03-06 | Calibrating system of particulate matter cutter |
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| CN102607893A true CN102607893A (en) | 2012-07-25 |
| CN102607893B CN102607893B (en) | 2014-07-30 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104111216A (en) * | 2014-06-18 | 2014-10-22 | 瑞曼博(北京)环保科技有限公司 | PM10/PM2.5 cutting head and filter membrane calibration system |
| CN104458358A (en) * | 2014-11-28 | 2015-03-25 | 中国地质科学院水文地质环境地质研究所 | Device and method for extracting PM2.5 component from loose particulate matters |
| 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 |
| CN105486619A (en) * | 2016-02-01 | 2016-04-13 | 河南省计量科学研究院 | System for calibrating particulate matter measuring instruments and calibrating method of system |
| CN107860598A (en) * | 2017-11-24 | 2018-03-30 | 华测检测认证集团股份有限公司 | A kind of portable cutter for particles fast calibration device and its calibration method |
| CN112304714A (en) * | 2020-10-28 | 2021-02-02 | 中国科学院、水利部成都山地灾害与环境研究所 | Sampling device for tree trunk greenhouse gas |
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| CN2507004Y (en) * | 2000-11-03 | 2002-08-21 | 青岛崂山电子仪器总厂 | Cutter for granular sampler |
| US20070113685A1 (en) * | 2003-08-06 | 2007-05-24 | Solomon Zaromb | Aerosol collection apparatus and methods |
| CN202582952U (en) * | 2012-03-06 | 2012-12-05 | 深圳市华测检测技术股份有限公司 | Calibration system for particle cutter |
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2012
- 2012-03-06 CN CN201210056478.7A patent/CN102607893B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2507004Y (en) * | 2000-11-03 | 2002-08-21 | 青岛崂山电子仪器总厂 | Cutter for granular sampler |
| US20070113685A1 (en) * | 2003-08-06 | 2007-05-24 | Solomon Zaromb | Aerosol collection apparatus and methods |
| CN202582952U (en) * | 2012-03-06 | 2012-12-05 | 深圳市华测检测技术股份有限公司 | Calibration system for particle cutter |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104111216A (en) * | 2014-06-18 | 2014-10-22 | 瑞曼博(北京)环保科技有限公司 | PM10/PM2.5 cutting head and filter membrane calibration system |
| CN104458358A (en) * | 2014-11-28 | 2015-03-25 | 中国地质科学院水文地质环境地质研究所 | Device and method for extracting PM2.5 component from loose particulate matters |
| 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 |
| CN105486619A (en) * | 2016-02-01 | 2016-04-13 | 河南省计量科学研究院 | System for calibrating particulate matter measuring instruments and calibrating method of system |
| CN107860598A (en) * | 2017-11-24 | 2018-03-30 | 华测检测认证集团股份有限公司 | A kind of portable cutter for particles fast calibration device and its calibration method |
| CN112304714A (en) * | 2020-10-28 | 2021-02-02 | 中国科学院、水利部成都山地灾害与环境研究所 | Sampling device for tree trunk greenhouse gas |
| CN112304714B (en) * | 2020-10-28 | 2022-12-06 | 中国科学院、水利部成都山地灾害与环境研究所 | Sampling device for tree trunk greenhouse gas |
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| CN102607893B (en) | 2014-07-30 |
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Address after: 518057 Guangdong, Shenzhen Province, Baoan District District, Wei Wei Industrial Park, building C, 70 Patentee after: CENTRE TESTING INTERNATIONAL GROUP Co.,Ltd. Address before: 518057 Guangdong, Shenzhen Province, Baoan District District, Wei Wei Industrial Park, building C, 70 Patentee before: Centre Testing International (Shenzhen) Co.,Ltd. |
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Effective date of registration: 20160226 Address after: 518101, C building, the Peach Garden science and Technology Innovation Park, Xixiang iron ore reservoir, Baoan District, Shenzhen, Guangdong, China Patentee after: Shenzhen Huawei Metrology Technology Co.,Ltd. Address before: 518057 Guangdong, Shenzhen Province, Baoan District District, Wei Wei Industrial Park, building C, 70 Patentee before: CENTRE TESTING INTERNATIONAL GROUP Co.,Ltd. |
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Address after: 518000, 1st Floor, Taohuayuan Science and Technology Innovation Park Public Testing Center, Tiegang Community, Xixiang Street, Bao'an District, Shenzhen, Guangdong Province Patentee after: Huace Metrology Testing Co.,Ltd. Address before: 518101 building C, Taohuayuan science and Technology Innovation Park, Tiegang reservoir, Xixiang, Bao'an District, Shenzhen City, Guangdong Province Patentee before: Shenzhen Huawei Metrology Technology Co.,Ltd. |