CN102866091A - Particulate matter differential concentration measuring system based on beta ray method - Google Patents
Particulate matter differential concentration measuring system based on beta ray method Download PDFInfo
- Publication number
- CN102866091A CN102866091A CN2012103639338A CN201210363933A CN102866091A CN 102866091 A CN102866091 A CN 102866091A CN 2012103639338 A CN2012103639338 A CN 2012103639338A CN 201210363933 A CN201210363933 A CN 201210363933A CN 102866091 A CN102866091 A CN 102866091A
- Authority
- CN
- China
- Prior art keywords
- particle
- dust
- particulate matter
- concentration
- passage
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Sampling And Sample Adjustment (AREA)
Abstract
The invention relates to a particulate matter differential concentration measuring system based on a beta ray method, which comprises at least two dust-containing airflow channels, namely a particulate matter dedusting channel (1) and a particulate matter dust channel (2), wherein one end of the particulate matter dedusting channel (1) is provided with a first intake pipe orifice (3), and the other end is provided with a first concentration detection part (7); and one end of the particulate matter dust channel (2) is provided with a second intake pipe orifice (4), and the other end is provided with a second concentration detection part (8). The particulate matter dedusting channel (1) is further provided with a particulate matter filtering device used for filtering dust. The particulate matter differential concentration measuring system has the advantages that the particulate matter measurement concentration error caused by changes of moisture can be decreased through a differential method without dehumidification, and the particulate matter measurement concentration error caused by mould interference can be decreased through the differential method. The invention provides a particulate matter collecting environment the same as a manual sampling method, so that the error of a manual sampling value can be efficiently reduced.
Description
Technical field
The present invention relates to a kind of measuring concentration of granules in certain system, especially relate to a kind of particle difference concentration measurement system based on the β rays method.
Background technology
Airborne overall suspended pellet TSP (Total Suspended Particulate) refers to swim in the general name of airborne solid-state and liquid particles thing, and its particle size range is about 0.1-100 μ m.Usually the particle of kinetic diameter below 10 μ m called PM
10, being called again pellet or floating dust, they are the suspended particulates that can float for a long time in atmosphere.Especially for the dynamics particle diameter at 5 μ m with the internal respiration particle, because little can directly the suction in the respiratory tract of particle diameter works the mischief, especially the dynamics particle diameter 2.5 μ m with interior fine particle in, plumbous (Ph), manganese (Mn), cadmium (cd), antimony (sh), arsenic (As), nickel (Ni), sulfate, palycyclic aromatic equal size are higher, in air, hold and stay the time long, easily pollutant is taken to far place pollution range is enlarged.Pellet also can be chemical reaction reaction bed is provided in atmosphere, be the key object of studying in the aerosol chemistry, has been decided to be an important indicator of air quality monitoring.Airborne particle also has scattering sunlight, reduces the visibility of atmosphere etc. the deleterious effect of environment.
After pellet is sucked by the people, can be accumulated in the respiratory system, cause numerous disease.Exposure to coarseparticulate can be encroached on respiratory system, brings out asthma.Fine particle possibility cardiac trigger disease, tuberculosis, breathing problem reduce pulmonary function etc.Therefore, for sensitive groups such as old man, children and oneself trouble cardiopulmonary patients, risk is larger.In addition, the particle in the surrounding air still reduces the main cause of visibility, and can damage building surface.The measuring method of at present most widely used particle concentration is for to measure with the method for β source, micro-oscillating balance and LASER Light Source.Method for monitoring and analyzing to particle also has the weighing measurement method, it is mass method, the concentration of overall suspended pellet represents with the milligram number of overall suspended pellet in every cubic metres of air, gather oneself at sampling efficiency near 100% filter membrane with the large capacity particle of standard sampling thief and know the particle of volume, under the constant temperature and humidity condition, the mass change of sampling film is determined the particle quality that collects again divided by sampling volume, to obtain the mass concentration of particle before and after the weighing sampling.Accuracy, the accuracy and reliability of the method for weighing measurement are fine, but what generally use at present is to utilize that electronic balance is manual weighs, labor intensive not only, and have manual error, and can not realize robotization and the real-time of particle concentration monitoring.At present to the automatic monitoring of Atmospheric particulates all take manual method as standard, and no matter be with β source, micro-oscillating balance or the method for LASER Light Source, the variation of surrounding air humidity, VOC and ammonium salt class particle all can have a huge impact measurement result.Usual way is first dust-contained airflow to be carried out dehumidification treatments, carries out measurement of concetration again, yet in dehumidification process, owing to measuring concentration error because humidity changes the particle that easily causes.The environment of the residing environment of the employed filter membrane of automatic monitoring method and hand sampling is also different in addition, particularly the volatile particles thing is measured and is produced very large error.Therefore, the automatic monitoring method of research Atmospheric particulates, development high sensitivity, easy and simple to handle, the economical and practical and Atmospheric particulates automated monitor that is easy to safeguard have great importance in the atmosphere environment supervision research field.
Summary of the invention
Above-mentioned technical matters of the present invention is mainly solved by following technical proposals:
A kind of particle difference concentration measurement system based on the β rays method is characterized in that, comprises at least two dust-contained airflow passages, is respectively particle dust removal passage and particle dust-laden passage; Described particle dust removal passage one end is provided with the first air inlet mouth of pipe, and the other end is provided with the first concentration part; Described particle dust-laden passage one end is provided with the second air inlet mouth of pipe, and the other end is provided with the second concentration part; Also be provided with the particle filtration unit for filter dirt on the described particle dust removal passage.
At above-mentioned a kind of particle difference concentration measurement system based on the β rays method, described particle dust removal passage comprises top dust-contained airflow passage and bottom dust-contained airflow passage, the above-mentioned first air inlet mouth of pipe is located at top dust-contained airflow passage one end, and the described top dust-contained airflow passage other end is communicated with described bottom dust-contained airflow passage one end by above-mentioned particle filtration unit; Above-mentioned the first concentration part is arranged on the other end of described bottom dust-contained airflow passage.
At above-mentioned a kind of particle difference concentration measurement system based on the β rays method, described particle filtration unit comprises that an inside is provided with the particulate filter of filter membrane and is used for placing particulate filter and capable of opening and closing filter membrane placement housing, and the filter membrane filter footpath in the described particulate filter is 0.1 μ m～22 μ m.
A kind of particle difference concentration measurement system based on the β rays method above-mentioned comprises that also one has the temperature control equipment of temp probe, and above-mentioned filter membrane is placed in this device.
At above-mentioned a kind of particle difference concentration measurement system based on the β rays method, described the first concentration part and the second concentration part are the particle concentration monitoring equipment of β rays method.
Therefore, the present invention has following advantage: 1. the method by difference does not need just can reduce to measure concentration error because humidity changes the particle that causes by dehumidifying; 2. the method by difference can reduce to measure concentration error because worker's mould disturbs the particle that causes.3. the method can provide a kind of particle identical with the hand sampling method to gather environment, can effectively reduce the error with the hand sampling value.4. this method is organically combined hand sampling and automatic monitoring, may by weighing of filtration membrane being checked and approved and proofreaied and correct the concentration data of automatic monitor, therefore also can be used as the part that the automatic monitor running quality guarantees.
Description of drawings
Accompanying drawing 1 is a kind of main TV structure schematic diagram of the present invention.
Accompanying drawing 2 is the structure for amplifying schematic diagram at A place among Fig. 1.
Embodiment
Below by embodiment, and by reference to the accompanying drawings, technical scheme of the present invention is described in further detail, among the figure, particle dust removal passage 1, particle dust-laden passage 2, the first air inlet mouth of pipe 3, the second air inlet mouth of pipe 4, top dust-contained airflow passage 5, bottom dust-contained airflow passage 6, the first concentration part 7, the second concentration part 8, filter membrane 9, thermostat 10, temp probe 11.
Embodiment 1: at first, introduce the basic structure of lower this particle difference concentration measurement system: as shown in Figure 1, native system comprises two-way dust-contained airflow passage, is respectively particle dust removal passage 1 and particle dust-laden passage 2; Particle dust removal passage 1 one ends are provided with the first air inlet mouth of pipe 3, and the other end is provided with the first concentration part 7; Particle dust-laden passage 2 one ends are provided with the second air inlet mouth of pipe 4, and the other end is provided with the second concentration part 8; Also be provided with the particle filtration unit on the particle dust removal passage 1.
Particle dust removal passage 1 comprises top dust-contained airflow passage 5 and bottom dust-contained airflow passage 6, the first air inlet mouth of pipe 3 is located at top dust-contained airflow passage 5 one ends, and top dust-contained airflow passage 5 other ends are communicated with bottom dust-contained airflow passage 6 one ends by above-mentioned particle filtration unit; The first concentration part 7 is arranged on the other end of bottom dust-contained airflow passage 6.
In the native system, the particle filtration unit comprises that an inside is provided with the particulate filter of filter membrane 9 and is used for placing particulate filter and capable of opening and closing filter membrane placement housing, filter membrane filter footpath in the particulate filter is 0.1 μ m～22 μ m, flue dust in the particle dust removal passage 1 is by arriving behind the smoke dust filter in the first concentration part 7, in the present embodiment, on smoke dust filter, can also install a thermostat 10 with temp probe 11 additional, filter membrane is placed housing to be arranged in the thermostat 10, certainly, this thermostat 10 is not necessary parts, smoke dust filter also can carry out work under the condition of constant temperature not, and thermostat all adopts traditional constant temperature technology to get final product.
In the present embodiment, the first concentration part 7 and the second concentration part 8 are the particle concentration monitoring equipment of β rays method.
In the present embodiment, as shown in Figure 2, filter membrane 9 can adopt double-layered filtration film 9, carries out double medium filtration, makes measurement result more accurate, can certainly adopt three layers even more multi-layered filter membrane form to carry out.
Should be noted that wherein to have at least on one road dust-contained airflow passage and must be provided with the particle filtration unit.When adopting one road dust-contained airflow passage, can measure by the method that switch valve uses timesharing to measure, namely make dust-contained airflow enter again the concentration part by the particle filtration unit by switch valve first, measure concentration Δ P
1=Δ P
Water, then switch valve makes dust-contained airflow directly enter the concentration part, measures concentration Δ P
2=Δ P
Water+ Δ P
Dirt, by Δ P
Dirt=Δ P
2-Δ P
1Calculate ultimate density.
Specific embodiment described herein only is to the explanation for example of the present invention's spirit.Those skilled in the art can make various modifications or replenish or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present invention or surmount the defined scope of appended claims.
Although this paper has more used the terms such as particle dust removal passage 1, particle dust-laden passage 2, the first air inlet mouth of pipe 3, the second air inlet mouth of pipe 4, top dust-contained airflow passage 5, bottom dust-contained airflow passage 6, the first concentration part 7, the second concentration part 8, filter membrane 9, thermostat 10, do not get rid of the possibility of using other term.Using these terms only is in order to describe more easily and explain essence of the present invention; They are construed to any additional restriction all is contrary with spirit of the present invention.
Claims (5)
1. the particle difference concentration measurement system based on the β rays method is characterized in that, comprises at least two dust-contained airflow passages, is respectively particle dust removal passage (1) and particle dust-laden passage (2); Described particle dust removal passage (1) one end is provided with the first air inlet mouth of pipe (3), and the other end is provided with the first concentration part (7); Described particle dust-laden passage (2) one ends are provided with the second air inlet mouth of pipe (4), and the other end is provided with the second concentration part (8); Also be provided with the particle filtration unit for filter dirt on the described particle dust removal passage (1), the first air inlet mouth of pipe (3) and the second air inlet mouth of pipe (4) all are connected to PM2.5 cutter or PM1.0 cutter.
2. a kind of particle difference concentration measurement system based on the β rays method according to claim 1, it is characterized in that, described particle dust removal passage (1) comprises top dust-contained airflow passage (5) and bottom dust-contained airflow passage (6), the above-mentioned first air inlet mouth of pipe (3) is located at top dust-contained airflow passage (5) one ends, and described top dust-contained airflow passage (5) other end is communicated with described bottom dust-contained airflow passage (6) one ends by above-mentioned particle filtration unit; Above-mentioned the first concentration part (7) is arranged on the other end of described bottom dust-contained airflow passage (6).
3. a kind of particle difference concentration measurement system based on the β rays method according to claim 1, it is characterized in that, described particle filtration unit comprises that an inside is provided with the particulate filter of filter membrane (9) and is used for placing particulate filter and capable of opening and closing filter membrane placement housing, and the filter membrane filter footpath in the described particulate filter is 0.1 μ m～22 μ m.
4. a kind of particle difference concentration measurement system based on the β rays method according to claim 1 is characterized in that, comprises that also one has the temperature regulating device (10) of temp probe (11), and above-mentioned filter membrane is placed housing and is arranged in the temperature regulating device (10).
5. a kind of particle difference concentration measurement system based on the β rays method according to claim 1 is characterized in that, described the first concentration part (7) and the second concentration part (8) are β ray measuring concentration of granules in certain equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103639338A CN102866091A (en) | 2012-07-19 | 2012-09-26 | Particulate matter differential concentration measuring system based on beta ray method |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210251006.7 | 2012-07-19 | ||
| CN201210251006 | 2012-07-19 | ||
| CN2012103639338A CN102866091A (en) | 2012-07-19 | 2012-09-26 | Particulate matter differential concentration measuring system based on beta ray method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102866091A true CN102866091A (en) | 2013-01-09 |
Family
ID=47445096
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012103639338A Pending CN102866091A (en) | 2012-07-19 | 2012-09-26 | Particulate matter differential concentration measuring system based on beta ray method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102866091A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103245601A (en) * | 2013-04-23 | 2013-08-14 | 合肥福瞳光电科技有限公司 | Method for measuring concentration of particulate matter, and device adopting method |
| CN103868834A (en) * | 2014-03-14 | 2014-06-18 | 江苏华力智能科技有限公司 | Indoor-outdoor PM2.5 environment monitoring collector |
| CN106596600A (en) * | 2016-12-26 | 2017-04-26 | 宁夏软件工程院有限公司 | Electrolytic plating solution ion concentration compensation on-line measurement device based on beta-ray absorption process |
| CN106644966A (en) * | 2016-12-28 | 2017-05-10 | 武汉三众和光电科技有限公司 | Self-calibration rising dust measuring method and self-calibration rising dust measuring device |
| CN107063954A (en) * | 2017-04-12 | 2017-08-18 | 北京雪迪龙科技股份有限公司 | A kind of method that error correction control system, β dust gauges eliminate strainer error |
| CN107238548A (en) * | 2017-08-17 | 2017-10-10 | 青岛众瑞智能仪器有限公司 | One kind sampling and integral type β ray flue dust quality weighing instruments of weighing |
| CN109238933A (en) * | 2018-09-29 | 2019-01-18 | 沈阳利凯环境仪器有限公司 | A kind of particle monitoring device |
| CN110953693A (en) * | 2019-12-24 | 2020-04-03 | 珠海格力电器股份有限公司 | Display panel and air conditioner |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6205842B1 (en) * | 1999-02-02 | 2001-03-27 | Rupprecht & Patashnick Company, Inc. | Differential particulate mass monitor with intrinsic correction for volatilization losses |
| US6651480B2 (en) * | 1999-05-10 | 2003-11-25 | Rupprecht & Patashnick Company, Inc. | Particulate mass measuring method with intrinsic correction for volatilization losses |
| CN101101256A (en) * | 2007-07-03 | 2008-01-09 | 武汉市天虹仪表有限责任公司 | Beta-ray soot concentration direct-reading monitor and method for determining effective sample |
| CN201408141Y (en) * | 2009-03-20 | 2010-02-17 | 南京埃森环境技术有限公司 | High-temperature fume sampling line with heating and thermal insulating functions |
| CN201803932U (en) * | 2010-09-19 | 2011-04-20 | 武汉市天虹仪表有限责任公司 | Portable automatic continuous monitor for concentration of particulate matters |
| CN102095673A (en) * | 2010-12-28 | 2011-06-15 | 武汉市天虹仪表有限责任公司 | Smoke concentration direct reading monitor |
| CN202256158U (en) * | 2011-10-24 | 2012-05-30 | 中南民族大学 | Real-time online detection analyzer for poisonous particles in smoke |
-
2012
- 2012-09-26 CN CN2012103639338A patent/CN102866091A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6205842B1 (en) * | 1999-02-02 | 2001-03-27 | Rupprecht & Patashnick Company, Inc. | Differential particulate mass monitor with intrinsic correction for volatilization losses |
| US6651480B2 (en) * | 1999-05-10 | 2003-11-25 | Rupprecht & Patashnick Company, Inc. | Particulate mass measuring method with intrinsic correction for volatilization losses |
| CN101101256A (en) * | 2007-07-03 | 2008-01-09 | 武汉市天虹仪表有限责任公司 | Beta-ray soot concentration direct-reading monitor and method for determining effective sample |
| CN201408141Y (en) * | 2009-03-20 | 2010-02-17 | 南京埃森环境技术有限公司 | High-temperature fume sampling line with heating and thermal insulating functions |
| CN201803932U (en) * | 2010-09-19 | 2011-04-20 | 武汉市天虹仪表有限责任公司 | Portable automatic continuous monitor for concentration of particulate matters |
| CN102095673A (en) * | 2010-12-28 | 2011-06-15 | 武汉市天虹仪表有限责任公司 | Smoke concentration direct reading monitor |
| CN202256158U (en) * | 2011-10-24 | 2012-05-30 | 中南民族大学 | Real-time online detection analyzer for poisonous particles in smoke |
Non-Patent Citations (1)
| Title |
|---|
| 中国环境监测总站: "《中华人民共和国环境保护行业标准 HJ/T 374-2007》", 3 December 2007 * |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103245601A (en) * | 2013-04-23 | 2013-08-14 | 合肥福瞳光电科技有限公司 | Method for measuring concentration of particulate matter, and device adopting method |
| CN103245601B (en) * | 2013-04-23 | 2014-12-10 | 合肥福瞳光电科技有限公司 | Method for measuring concentration of particulate matter, and device adopting method |
| CN103868834A (en) * | 2014-03-14 | 2014-06-18 | 江苏华力智能科技有限公司 | Indoor-outdoor PM2.5 environment monitoring collector |
| CN106596600A (en) * | 2016-12-26 | 2017-04-26 | 宁夏软件工程院有限公司 | Electrolytic plating solution ion concentration compensation on-line measurement device based on beta-ray absorption process |
| CN106596600B (en) * | 2016-12-26 | 2019-09-03 | 蔡银花 | In-situ measurement equipment is compensated based on β attenuation sensors electrolysis electroplate liquid ion concentration |
| CN106644966A (en) * | 2016-12-28 | 2017-05-10 | 武汉三众和光电科技有限公司 | Self-calibration rising dust measuring method and self-calibration rising dust measuring device |
| CN107063954A (en) * | 2017-04-12 | 2017-08-18 | 北京雪迪龙科技股份有限公司 | A kind of method that error correction control system, β dust gauges eliminate strainer error |
| CN107063954B (en) * | 2017-04-12 | 2019-08-06 | 北京雪迪龙科技股份有限公司 | A kind of method that error correction control system, β dust gauge eliminate strainer error |
| CN107238548A (en) * | 2017-08-17 | 2017-10-10 | 青岛众瑞智能仪器有限公司 | One kind sampling and integral type β ray flue dust quality weighing instruments of weighing |
| CN109238933A (en) * | 2018-09-29 | 2019-01-18 | 沈阳利凯环境仪器有限公司 | A kind of particle monitoring device |
| CN110953693A (en) * | 2019-12-24 | 2020-04-03 | 珠海格力电器股份有限公司 | Display panel and air conditioner |
| CN110953693B (en) * | 2019-12-24 | 2024-04-19 | 珠海格力节能环保制冷技术研究中心有限公司 | Filter screen congestion monitoring method and computer readable storage medium |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102866091A (en) | Particulate matter differential concentration measuring system based on beta ray method | |
| CN201637649U (en) | Measuring instrument for atmospheric particulate matter | |
| CN103196775B (en) | The sampling of atmospheric particulate matter concentration by gravimetric on-line monitoring, meausring apparatus and method | |
| Hinz et al. | A comprehensive experimental study of aerial pollutants in and emissions from livestock buildings. Part 1: Methods | |
| CN102841044A (en) | Beta-ray atmospheric particulate monitor and monitoring method thereof | |
| CN105642038B (en) | Efficacy detection device, detection method and the lung ventilator of filter core | |
| CN101970990A (en) | Systems and methods for providing environment monitoring | |
| CN109269013A (en) | The service life monitoring method and device of filter core | |
| CN202793983U (en) | Particulate matter difference concentration measuring system based on oscillation balance | |
| Bergmans et al. | Particulate matter indoors: A strategy to sample and monitor size-selective fractions | |
| Knight et al. | Spatial and seasonal variations of PM concentration and size distribution in manure-belt poultry layer houses | |
| CN102607893B (en) | Calibrating system of particulate matter cutter | |
| CN206960173U (en) | A kind of airborne particulate harvester | |
| CN102607895B (en) | Calibration system of particle cutter | |
| CN102841034A (en) | Differential concentration measurement system and differential concentration measurement method of particulate matter based on oscillating scale | |
| Kiss et al. | Bias caused by water adsorption in hourly PM measurements | |
| CN204286886U (en) | Simple air sampling apparatus | |
| CN106560689A (en) | Testing system and method for mass-concentration particulate purifying efficiency of vehicle-mounted external-circulation type air purifier | |
| CN107588994B (en) | Pavement dust catcher, dust detection device and detection method | |
| CN215727527U (en) | Ventilation and collection device of atmospheric particulate matter detection equipment | |
| CN208188709U (en) | Exposure experimental provision | |
| CN108120659A (en) | A kind of particle concentration detecting system and method having from zero calibration | |
| TWI646321B (en) | Air pollution test system | |
| Pfeiffer | Sampling for PM10 and PM2. 5 particulates | |
| Marsh et al. | Performance evaluation of the SanScent® air scrubber for removal of dust, ammonia and hydrogen sulfide from the exhaust air of a swine nursery |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130109 |