CN102607893B - Calibrating system of particulate matter cutter - Google Patents
Calibrating system of particulate matter cutter Download PDFInfo
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- CN102607893B CN102607893B CN201210056478.7A CN201210056478A CN102607893B CN 102607893 B CN102607893 B CN 102607893B CN 201210056478 A CN201210056478 A CN 201210056478A CN 102607893 B CN102607893 B CN 102607893B
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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 cutter for particles field, relate in particular to the calibration system of a kind of high precision, dynamical cutter for particles.
Background technology
Along with industrial development, environment for human survival is destroyed, and the situation is tense for its Air Contamination, and airborne suspended particulate substance can cause haze weather.
Weather scientist and medical expert think, the haze weather being caused by fine particle is even larger than sandstorm to the harm of health.10 microns of above particles of particle diameter, can be blocked in outside people's nose; The particle of particle diameter between 2.5 microns to 10 microns, can enter the upper respiratory tract, but partly can excrete by sputum etc., also can be stopped by the fine hair of nasal cavity inside in addition, relatively little to human health damage; And the fine particle of particle diameter below 2.5 microns, diameter is equivalent to human hair's 1/10 size, is difficult for being blocked.After being inhaled into human body, can directly enter bronchus, disturb the gas exchange of lung, cause the disease that comprises the aspects such as asthma, bronchitis and cardiovascular disease.
Atmospheric aerosol is the little component of content in earth atmosphere composition, but its radiation balance (and then to Global climate change), chemical reaction of stratosphere and troposphere etc. to air quality, visibility, acid deposition, cloud and precipitation, atmosphere all has material impact.The most a large amount of epidemiological study is observed health infringement and is significantly higher than coarseparticulate with the degree of correlation being exposed between fine particle PM2.5 (particulate matter, PM) wherein.PM2.5, also referred to as entering lung particle, refers to that in atmosphere, aerodynamic diameter is less than or equal to the fine particle of 2.5 microns.PM2.5 particle diameter is little, is rich in a large amount of poisonous and harmful substances and the residence time in atmosphere is long, fed distance is far away, not only air quality and visibility etc. is had to important impact, and serious threat is to the mankind's health.PM2.5 can directly enter mankind's bronchus and even reach alveolar, is attached to for a long time bronchus and lung, and the metabolism of human body self cannot be rejected to external.Be mainly that respiratory system and cardiovascular system are damaged, comprise respiratory tract irriate, cough, expiratory dyspnea, reduction pulmonary function, increase the weight of asthma, cause chronic bronchitis, arrhythmia cordis, non-lethal heart disease, heart and lung diseases patient be dead too early.In atmosphere, the concentration of PM2.5 is for a long time higher than 10 μ g/m3, and mortality risk just starts 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 respectively 4%, 6%, and 8%.
In atmosphere, the source of PM2.5 has 3 kinds: (1) natural source particle, comprises volcanic debris, dirt ash, forest fire, exposed earth's surface, sandstorm, wind airborne dust soil, floating sea salt, pollen, fungal spore, bacterium etc.(2) original suspended particulate substance, the suspended particulate substance that bag hand fuel-burning power plant, petrochemical factory and general factory incomplete combustion produce.(3) derivative particle suspensions, comprises sulfate, nitrate, organic compound and other compound that the oxysulfide of factory, motor vehicle, petrochemical industry discharge or oxides of nitrogen, organic compound are subject to producing after the solar radiation fine particle forming that interacts.Wherein motor vehicle is the main source of PM2.5.
At present, be widely used in the world and measure the method for PM2.5 and have three kinds: gravimetric method, β attenuation sensors and micro-oscillating balance method.The operation steps of these methods is mainly divided into two steps, first PM2.5 and larger particulate separation, the weight of the PM2.5 that then mensuration is separated.Aspect PM2.5 separation and trapping, research and develop PM2.5 cutter, its principle is under the effect of aspiration pump, when air flows through cutter with certain flow velocity, those larger particles are because inertia is large, hit being coated with on oily parts and be trapped, the less PM2.5 of inertia can the overwhelming majority along with air passes through smoothly.But, with regard to trapping ability and the effect of the cutter of PM2.5, diameter is less than the particle of 2.5 microns neither all can be passed through, and is that the particle of 2.5 microns also has 50% probability can pass through cutter just; Diameter is greater than the particle of 2.5 microns and is not entirely trapped, and therefore utilizes PM2.5 cutter separation and collection fine particle, between the collection statistics of Different field and actual value, may have deviation, causes and over-evaluates or underestimate.According to the standard-required of " the gravimetry method of surrounding air PM10 and PM2.5 ", the percent of pass of the more than 3.0 microns particle of kinetic diameter need be less than 16%, and the percent of pass of 2.1 microns of following particles is greater than 84%, and then definite result drops on a believable interval.
Cutter for particles is for being that a dust granules within the scope of special value separates to diameter, for example PM2.5 cutter is diameter to be less than or equal to the particle of 2.5 microns separate, cutter must be through calibration before using, the method of testing of current PM2.5 is by the size of measuring flow, cutter, by adopting mathematical formulae to convert to calculate its result, can there is larger error in its measurement result therefore.
Therefore, need the calibration system of a kind of high precision, dynamical cutter for particles badly.
Summary of the invention
The object of this invention is to provide the calibration system of a kind of high precision, dynamical cutter for particles.
To achieve these goals, technical scheme provided by the invention is: the calibration system that a kind of cutter for particles is provided, be used for calibrating cutter for particles, described cutter is for separating of airborne particle, it comprises: source of the gas, gas piping, control system and experiment storehouse, described source of the gas is communicated with described experiment storehouse by described gas piping, described control system comprises controller, first flow controller, temperature controller and humidity controller, described first flow controller, temperature controller and humidity controller are all electrically connected with described controller, described experiment storehouse comprises main cabin body, the first blowning installation and the second blowning installation, the upper surface of described main cabin body offers the charging aperture that allows particle enter, on the sidewall of described main cabin body, be provided with the admission piece being communicated with described main cabin body, described the first blowning installation is communicated with main cabin body by described charging aperture, and particle is blown into described main cabin body, described the second blowning installation is communicated with described main cabin body by described admission piece, and blow in the body of described main cabin, the air that described particle is provided with described source of the gas in the body of described main cabin is mixed to form the standard model of exact concentration, sample for cutter to be calibrated, standard model and the collected data of cutter to be calibrated by contrast exact concentration are calibrated cutter to be calibrated.
Described main cabin body is cylindric.
Described admission piece is communicated with described main cabin body along the tangential of outer wall of described main cabin body, and blows in the body of described main cabin, makes the annular air-flow of the inner formation of described main cabin body.
The speed of the air-flow that described the first blowning installation produces is 10～14 meter per seconds, and the speed that described the second blowning installation produces air-flow is 32～38 meter per seconds.
Described first flow controller, temperature controller and humidity controller are all installed on described gas piping.
The calibration system of described cutter for particles also comprises flowmeter, and described flowmeter is arranged on described gas piping.
Described control system also comprises second amount controller, and described source of the gas is connected with described charging aperture by described gas piping by second amount controller.
Described source of the gas provides clean gas.
The calibration system of described cutter for particles also comprises static regulator, and described static regulator is arranged on described gas piping.
The bottom of described main cabin body is provided with gas outlet, is connected with the joint for being connected with cutter on described gas outlet.
Compared with prior art, in the calibration system of cutter for particles of the present invention, described main cabin body is mixed to form the standard model of exact concentration for gas and described particle that described source of the gas is exported, and samples for described cutter.Particle is mixed into standard model by the focusing on of the calibration system of cutter for particles of the present invention, then described standard model is entered to cutter to be calibrated, calibrate by standard model and the collected data of cutter to be calibrated of contrast concentration known.
By following description also by reference to the accompanying drawings, it is more clear that the present invention will become, and these accompanying drawings are used for explaining embodiments of the invention.
Brief description of the drawings
Fig. 1 is the frame diagram of an embodiment of the calibration system of cutter for particles of the present invention.
Fig. 2 is the structural representation in the experiment storehouse of the calibration system of cutter for particles as shown in Figure 1.
Fig. 3 is the vertical view of Fig. 2.
Illustrate: the calibration system 100 of cutter for particles, 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, second amount controller 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, in accompanying drawing, similarly element numbers represents similar element.As mentioned above, as Figure 1-3, the calibration system 100 of cutter for particles provided by the invention, be used for calibrating cutter for particles, described cutter is for separating of airborne particle, it comprises: source of the gas 10, gas piping 20, control system 30 and experiment storehouse 40, described source of the gas 10 is communicated with described experiment storehouse 40 by described gas piping 20, described control system 30 comprises controller 31, first flow controller 32, temperature controller 33 and humidity controller 34, described first flow controller 32, temperature controller 33 and humidity controller 34 are all electrically connected with described controller 31, described experiment storehouse 40 comprises main cabin body 41, the first blowning installation (on figure depending on) and the second blowning installation (not looking on figure), the upper surface of described main cabin body 41 offers the charging aperture 44 that allows particle enter, on the sidewall of described main cabin body 41, be provided with 3 admission pieces 45 that are communicated with described main cabin body 41, described the first blowning installation is communicated with main cabin body 41 by described charging aperture 44, and particle is blown into described main cabin body 41, described the second blowning installation is communicated with described main cabin body 41 by described admission piece 45, and to the body 41 interior air blowings of described main cabin, the air that described particle is provided with described source of the gas 10 in described main cabin body 41 is mixed to form the standard model of exact concentration, sample for cutter to be calibrated, standard model and the collected data of cutter to be calibrated by contrast exact concentration are calibrated cutter to be calibrated.
As shown in Figure 2, described main cabin body 41 is cylindric.
As shown in Figure 2,3, described admission piece 45 is communicated with described main cabin body 41 along the tangential of outer wall of described main cabin body 41, and to the body 41 interior air blowings of described main cabin, makes the annular air-flow of the inner formation of described main cabin body 41.
The speed of the air-flow that described the first blowning installation produces is 10～14 meter per seconds, and the speed that described the second blowning installation produces air-flow is 32～38 meter per seconds.
As shown in Figure 1, described first flow controller 32, temperature controller 33 and humidity controller 34 are all installed on described gas piping 20.
As shown in Figure 1, 2, described control system 30 also comprises second amount controller 37, and described source of the gas 10 is connected with described charging aperture 44 by described gas piping 20 by second amount controller 37.
As shown in Figure 1, described source of the gas 10 is clean gas.
As shown in Figure 1, the calibration system 100 of described cutter for particles also comprises static regulator 36, and described static regulator 36 is arranged on described gas piping 20.
As shown in Figure 1, the calibration system 100 of described cutter for particles also comprises flowmeter 35, and described flowmeter 35 is arranged on described gas piping 20.
As shown in Figure 1, 2, the bottom of described main cabin body 41 is provided with gas outlet 46, is connected with the joint 47 for being connected with cutter on described gas outlet 46.
In conjunction with Fig. 1-3, in the calibration system 100 of cutter for particles of the present invention, described main cabin body 41 is mixed to form the standard model of exact concentration for gas and described particle that described source of the gas 10 is exported, and samples for described cutter.Particle is mixed into standard model by the focusing on of the calibration system 100 of cutter for particles of the present invention, then described standard model is entered to cutter to be calibrated, calibrate by standard model and the collected data of cutter to be calibrated of contrast concentration known.
The calibration system 100 of cutter for particles provided by the invention can be calibrated PM2.5 cutter and other cutters.Above disclosed is only the preferred embodiments of the present invention, certainly can not limit with this interest field of the present invention, and the equivalent variations of therefore doing according to the present patent application the scope of the claims, still belongs to the scope that the present invention is contained.
Claims (9)
1. the calibration system of a cutter for particles, be used for calibrating cutter for particles, described cutter is for separating of airborne particle, it is characterized in that, comprise: source of the gas, gas piping, control system and experiment storehouse, described source of the gas is communicated with described experiment storehouse by described gas piping, described control system comprises controller, first flow controller, temperature controller and humidity controller, described first flow controller, temperature controller and humidity controller are all electrically connected with described controller, described first flow controller, temperature controller and humidity controller are all installed on described gas piping, described experiment storehouse comprises main cabin body, the first blowning installation and the second blowning installation, the upper surface of described main cabin body offers the charging aperture that allows particle enter, on the sidewall of described main cabin body, be provided with the admission piece being communicated with described main cabin body, described the first blowning installation is communicated with main cabin body by described charging aperture, and particle is blown into described main cabin body, described the second blowning installation is communicated with described main cabin body by described admission piece, and blow in the body of described main cabin, the air that described particle is provided with described source of the gas in the body of described main cabin is mixed to form the standard model of exact concentration, sample for cutter to be calibrated, standard model and the collected data of cutter to be calibrated by contrast exact concentration are calibrated cutter to be calibrated.
2. the calibration system of cutter for particles as claimed in claim 1, is characterized in that: described main cabin body is cylindric.
3. the calibration system of cutter for particles as claimed in claim 1, it is characterized in that: described admission piece is communicated with described main cabin body along the tangential of outer wall of described main cabin body, and blow in the body of described main cabin, make the annular air-flow of the inner formation of described main cabin body.
4. the calibration system of cutter for particles as claimed in claim 1, is characterized in that: the speed of the air-flow that described the first blowning installation produces is 10～14 meter per seconds, and the speed that described the second blowning installation produces air-flow is 32～38 meter per seconds.
5. the calibration system of cutter for particles as claimed in claim 1, is characterized in that: described control system also comprises second amount controller, and described source of the gas is connected with described charging aperture by described gas piping by second amount controller.
6. the calibration system of cutter for particles as claimed in claim 1, is characterized in that: described source of the gas provides clean gas.
7. the calibration system of cutter for particles as claimed in claim 1, is characterized in that: the calibration system of described cutter for particles also comprises static regulator, and described static regulator is arranged on described gas piping.
8. the calibration system of cutter for particles as claimed in claim 1, is characterized in that: the bottom of described main cabin body is provided with gas outlet, is connected with the joint for being connected with cutter on described gas outlet.
9. the calibration system of cutter for particles as claimed in claim 1, is characterized in that: the calibration system of described cutter for particles also comprises flowmeter, and described flowmeter is arranged on described 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 CN102607893A (en) | 2012-07-25 |
| CN102607893B true CN102607893B (en) | 2014-07-30 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
| 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 |
| CN105486619B (en) * | 2016-02-01 | 2019-10-01 | 河南省计量科学研究院 | Particulate matter measuring instrument calibration system and its scaling method |
| CN107860598B (en) * | 2017-11-24 | 2023-04-07 | 华测检测认证集团股份有限公司 | Portable rapid calibrating device and method for particulate matter cutter |
| 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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| CN2507004Y (en) * | 2000-11-03 | 2002-08-21 | 青岛崂山电子仪器总厂 | Cutter for granular sampler |
| US7472612B2 (en) * | 2003-08-06 | 2009-01-06 | Solomon Zaromb | Aerosol collection apparatus and method |
| 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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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. |
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