CN102914491A - Collector with real-time monitoring function - Google Patents
Collector with real-time monitoring function Download PDFInfo
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- CN102914491A CN102914491A CN2012103996903A CN201210399690A CN102914491A CN 102914491 A CN102914491 A CN 102914491A CN 2012103996903 A CN2012103996903 A CN 2012103996903A CN 201210399690 A CN201210399690 A CN 201210399690A CN 102914491 A CN102914491 A CN 102914491A
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- air intake
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Abstract
The invention discloses a collector with a real-time monitoring function. The collector comprises a laser emission device, a fine particle collecting device and a laser receiving device, wherein the fine particle collecting device comprises a shell, a sampling channel and a grading channel; the sampling channel and the grading channel are separately arranged in the shell; the grading channel is used for firstly grading the particles for the gas entering into the shell; the bigger particles are drained from the grading channel; to-be-monitored fine particles enter into the sampling channel; a barrier plate is arranged in the sampling channel; a flow-guiding hole is arranged on the barrier plate; a second collecting unit for collecting the fine particles is arranged in the flow-guiding hole; the laser emission device is located right above the flow-guiding hole; a receiving unit of the laser receiving device is located right under the flow-guiding hole; a laser beam emitted from the laser emission device passes through the second collecting unit and then enters into the receiving unit of the laser receiving device; and a calculating unit of the laser receiving device is used for calculating the concentration of the fine particles collected on the second collecting unit according to a light intensity signal measured by the receiving unit.
Description
Technical field
The present invention relates to the apparatus field technology of the particle sampling in the atmosphere, refer in particular to a kind of collector with real time monitoring function.
Background technology
Along with industrial expansion, the particulate pollutant degree in the atmosphere constantly increases, and these particulate pollutants can damage nervous system and the various objectionable impuritiess such as carcinogenic in can absorbed airs, bring a lot of negative effects for environment and human health.And how the particle in the atmosphere is carried out grain size segregation and demarcation, be research and the matter of utmost importance that solves Atmospheric Particulate Matter.
People adopt the particle sampler system to obtain the particle of appropriate level in the air, so that air quality or pollution index etc. is carried out effective determination and analysis.Usually, adopt impact sampler to carry out the grain size segregation sampling, the structure that present classification collides device mainly includes housing and the sampling channel that is arranged in the housing, be disposed with multistage collision collection group along airflow direction in this sampling channel, gas enters the multistage collision collection group of flowing through successively behind the sampling channel, separated the coming of the particle of various different-grain diameters (nanoparticles such as PM10, PM2.5, PM1 and PM0.1), with these particulate weighing, analyses in classification, just can obtain to reflect the data of air quality or pollution index.
Above-mentioned that the particle that collects is carried out the process of weighing, analysis, calculating is complicated, loaded down with trivial details, therefore, need work out a kind of new technical scheme and solve the problems referred to above.
Summary of the invention
In view of this, the present invention is directed to the disappearance of prior art existence, its fundamental purpose provides a kind of collector with real time monitoring function, the concentration that it can be in real time, precise monitoring goes out the fine particle that captures on the second collecting unit.
For achieving the above object, the present invention adopts following technical scheme:
A kind of collector with real time monitoring function includes laser beam emitting device, fine particle harvester and laser receiver;
Wherein, this fine particle harvester comprises housing, apart sampling channel and the classification passage that is arranged in the housing;
This housing top offers total air intake opening, these classification passage two ends are formed with respectively the first air intake opening, the first gas outlet, this the first air intake opening spacing is arranged at total air intake opening below and faces with total air intake opening, and this total air intake opening is positioned at the first air intake opening fully in the view field of vertical direction projection in plane, the first air intake opening place; Between the first air intake opening and the first gas outlet, be provided with in this classification passage for the first collecting unit that captures coarseparticulate; This first gas outlet is opened in the housing side, and place, the first gas outlet is connected with the first suction pump;
These sampling channel two ends are formed with respectively the second air intake opening, the second gas outlet; With total air intake opening is oblique communicates, this second gas outlet is opened on the housing this second air intake opening and the second suction pump is located to be connected with in this second gas outlet by the spacing between the first air intake opening and total air intake opening; Between the second air intake opening and the second gas outlet, be provided with barrier plate in this sampling channel, offer pod apertures on this barrier plate, in this pod apertures, be provided with for the second collecting unit that captures fine particle;
This laser beam emitting device is positioned at the aforementioned sample passage and is positioned at position directly over the pod apertures, and this laser beam emitting device is launched over against pod apertures and the laser beam of passing the second collecting unit; The oblique setting of the relative beam direction of airflow direction between aforementioned the second collecting unit and the second gas outlet;
This laser receiver comprises receiving element and computing unit, this receiving element is positioned under the pod apertures, the laser beam of this laser beam emitting device emission enters the receiving element of laser receiver behind the second collecting unit, this computing unit goes out the concentration of the fine particle that captures on the second collecting unit according to the strong calculated signals of receiving element institute photometry.
As a kind of preferred version, described the second collecting unit is wire netting.
As a kind of preferred version, also be provided with fixed head, the aforementioned metal net places on the fixed head.
As a kind of preferred version, described wire netting is arranged at the center of fixed head.
As a kind of preferred version, be equipped with a plurality of wire nettings in the peripheral even distribution type of central metal net on the described fixed head.
As a kind of preferred version, described the second collecting unit is that some mutual wound forms are filled in the metal fiber wire in the pod apertures.
As a kind of preferred version, described pod apertures is opened in the center of barrier plate.
As a kind of preferred version, be equipped with a plurality of pod apertures in the peripheral even distribution type of central guiding discharge orifice on the described barrier plate.
As a kind of preferred version, be formed with obliquely the drainage inclined-plane from pod apertures internal face upper end on the described barrier plate.
The present invention compared with prior art has obvious advantage and beneficial effect, particularly, as shown from the above technical solution, it mainly is to utilize the classification passage that the gas that enters in the housing is carried out first gradation, larger particles is discharged via the classification passage, entering in the sampling channel than fine grained of required monitoring, and be caught to combine on the second collecting unit than fine particle, then get on the receiver of laser receiver through the second collecting unit by laser beam emitting device Emission Lasers bundle, take laser beam through the particle on the second collecting unit after the decay of laser and scattering of light as foundation, computing unit goes out the concentration of the fine particle that captures on the second collecting unit according to the strong calculated signals of receiving element institute photometry, its can carry out Real-Time Monitoring and monitoring result accurate, saved and in the conventional art particle that collects has been carried out weighing, analyze, the complex process of calculating has been brought facility to people.
For more clearly setting forth architectural feature of the present invention and effect, the present invention is described in detail below in conjunction with accompanying drawing and specific embodiment.
Description of drawings
Fig. 1 is the one-piece construction schematic cross-section of the present invention's preferred embodiment;
Fig. 2 is the one-piece construction schematic cross-section of another embodiment of the present invention;
Fig. 3 is the concrete structure schematic diagram of wire netting shown in Fig. 2;
Fig. 4 is the distributed architecture schematic diagram of single metal net on fixed head;
Fig. 5 is the distributed architecture schematic diagram of a plurality of wire nettings on fixed head;
Fig. 6 is the distributing position schematic diagram of pod apertures on the barrier plate in the present invention's the preferred embodiment;
Fig. 7 is the distributing position schematic diagram of pod apertures on the barrier plate in the present invention's the preferred embodiment;
Fig. 8 is the cross section enlarged diagram at M-M place among Fig. 7.
The accompanying drawing identifier declaration:
10, laser beam emitting device 20, fine particle harvester
21, housing 211, total air intake opening
212, the first air intake opening 213, classification passage
214, the first gas outlet 215, the first suction pump
216, the first collecting unit
22, the second air intake opening 23, the second gas outlet
24, barrier plate 241, pod apertures
242, drainage inclined-plane 25, the second collecting unit
251, wire netting 2511, pore
252, fixed head 26, sampling channel
27, the second suction pump 30, laser receiver
31, receiving element 32, computing unit.
Embodiment
Please refer to shown in Figure 1ly, the concrete structure that it has demonstrated the present invention's preferred embodiment includes laser beam emitting device 10, fine particle harvester 20 and laser receiver 30.
Wherein, this fine particle harvester 20 comprises housing 21, apart classification passage 213 and the sampling channel 26 that is arranged in the housing 21;
These housing 21 tops offer total air intake opening 211, these classification passage 213 two ends are formed with respectively the first air intake opening 212, the first gas outlet 214, these the first air intake opening 212 spacings are arranged at total air intake opening 211 belows and face with total air intake opening 211, and this total air intake opening 211 is positioned at the first air intake opening 212 fully in the view field of vertical direction projection in plane, the first air intake opening 212 place; Be provided with between the first air intake opening and the first gas outlet for the first collecting unit that captures coarseparticulate in this classification passage, people can carry out sampling analysis to the coarseparticulate of appropriate level; This first gas outlet 212 is opened in housing 21 sides, and 214 places, the first gas outlet are connected with the first suction pump 215; Need to prove, aforementioned the first collecting unit can adopt the filter membrane structure that is used for trap particulate matter of conventional design, perhaps, adopt concrete structure design that following the second collecting unit implements also can, be not restricted at this.
These sampling channel 26 two ends are formed with respectively the second air intake opening 22, the second gas outlet 23; This second air intake opening 22 is by the spacing and total air intake opening 211 oblique communicate of the first air intake opening 212 with 211 of total air intake openings, and this second gas outlet 22 is opened on the housing 21 and these 23 places, the second gas outlet are connected with the second suction pump 27; Between the second air intake opening 22 and the second gas outlet 23, be provided with barrier plate 24 in this sampling channel 26, offer pod apertures 241 on this barrier plate 24, be formed with obliquely drainage inclined-plane 242 from pod apertures 241 internal faces upper end on the barrier plate 24, in this pod apertures 241, be provided with for the second collecting unit 25 that captures fine particle.As shown in Figure 1, this second collecting unit 25 is the metal fiber wire that is filled in the some mutual windings in the pod apertures 241.
Certainly, aforementioned the second collecting unit 25 also can be designed to wire netting or other suitable construction, as shown in Figure 2 to Figure 3, aforementioned the second collecting unit 25 is metal mesh structure, these some layers of metallized metal nets 251 are stacked and placed on up and down together (as shown in Figure 2), the setting of staggering of pore 2511 on the adjacent double layer of metal wire netting 251, and be formed with the gap between the adjacent two layers wire netting 251.Wire netting 251 can be installed on the fixed head 252, and the upper end of fixed head 252 protrudes from the upper surface of wire netting 251 at least, so, directly 251 stacks of multiple layer metal net is got final product; The setting position of wire netting 251 on fixed head 252 can have multiple, and for example, as shown in Figure 4, wire netting 251 positions are one, and it is arranged at the center of fixed head 252; As shown in Figure 5, every layer of wire netting includes a plurality of wire nettings 251 that level interval arranges, one of them wire netting 251 is positioned at fixed head 252 centers, all the other wire netting 251 even distribution types are located on central metal net 251 peripheries, structural design like this, so that air-flow is more even, be more conducive to gather particle.
To shown in Figure 8, pod apertures 241 distributing positions on the aforementioned barrier plate 24 also can have multiple such as Fig. 6, and for example, as shown in Figure 2, this pod apertures 241 is one, and it is positioned at the center of barrier plate 24; As shown in Figure 3 and Figure 4, pod apertures 241 is a plurality of, and the center of its barrier plate 24 offers a pod apertures, and it is peripheral that all the other pod apertures even distribution types are located on the central guiding discharge orifice, and concrete pod apertures size and quantity are not done any restriction at this.
This laser beam emitting device 10 is positioned at aforementioned sample passage 26 and is positioned at position directly over the pod apertures 241, and this laser beam emitting device 10 is launched over against pod apertures 241 and the laser beam of passing the second collecting unit 25; The oblique setting of the relative beam direction of airflow direction between aforementioned the second collecting unit 25 and the second gas outlet 23; As depicted in figs. 1 and 2, this second gas outlet 23 is opened in housing 21 sides, it is communicated with inside and outside housing 21 sidewalls, and utilize the second suction pump 27 that it is aspirated to form directed air-flow, so structural design flows away gas afterwards via following the second collecting unit 25 in the gas outlet 23 of housing 21 sides; Certainly, design attitude and the structure of the second gas outlet 23 are not limited thereto, and it can design in housing 21 belows etc., as long as the second gas outlet 23 facing to laser receiver 30, gets final product to have avoided air-flow to enter in the laser receiver 30.
This laser receiver 30 comprises receiving element and computing unit, this receiving element is positioned under the pod apertures 241, the laser beam of these laser beam emitting device 10 emissions enters the receiving element of laser receiver 30 behind the second collecting unit 25, this computing unit calculates by force the concentration of the fine particle that captures on the second collecting unit 24 according to the photometry of receiving element institute.
Sketch principle of work of the present invention as follows:
One, after gas enters in the housing via total air intake opening, because the difference setting of aforementioned the first suction pump, the second suction pump, utilize the classification passage that the gas that enters in the housing is carried out first gradation, larger particles is caught to combine on the first collecting unit, the particle that filters is discharged via the classification passage in company with gas, the entering in the sampling channel in company with gas than fine grained (for example PM2.5) of required monitoring;
Two, before aforementioned PM2.5 air-flow enters sampling channel, laser beam emitting device 10 is over against pod apertures 241 Emission Lasers bundles, laser beam is through trap particulate matter not on the second collecting unit 25(this moment the second collecting unit 25) then to get on the receiving element 31 of laser receiver 30, these receiving element 31 measured initial light intensity signals also transfer to computing unit 32;
Three, aforementioned PM2.5 air-flow enters in the sampling channel through the second air intake opening 22, and the parts of fine particle is stopped by the second collecting unit 25 and stays on the second collecting unit 25;
Laser beam emitting device 10 is over against pod apertures 241 Emission Lasers bundles, laser beam has particle through capturing on the second collecting unit 25(the second collecting unit 25 this moment) then to get on the receiving element 31 of laser receiver 30, these receiving element 31 measured real-time light intensity signals also transfer to computing unit 32; When increasing along with the particle that captures on the second collecting unit 25, the light intensity of laser beam after through the second collecting unit 25 can decay gradually, but so changes the concentration that goes out the fine particle that captures on the second collecting unit 25 by computing unit 25 real-time operations according to the light intensity of laser beam.
Design focal point of the present invention is, main system utilizes the classification passage that the gas that enters in the housing is carried out first gradation, larger particles is discharged via the classification passage, entering in the sampling channel than fine grained of required monitoring, and be caught to combine on the second collecting unit than fine particle, then get on the receiver of laser receiver through the second collecting unit by laser beam emitting device Emission Lasers bundle, take laser beam through the particle on the second collecting unit after the decay of laser and scattering of light as foundation, computing unit goes out the concentration of the fine particle that captures on the second collecting unit according to the strong calculated signals of receiving element institute photometry, its can carry out Real-Time Monitoring and monitoring result accurate, saved and in the conventional art particle that collects has been carried out weighing, analyze, the complex process of calculating has been brought facility to people.
The above, it only is preferred embodiment of the present invention, be not that technical scope of the present invention is imposed any restrictions, therefore every foundation technical spirit of the present invention all still belongs in the scope of technical solution of the present invention any trickle modification, equivalent variations and modification that above embodiment does.
Claims (9)
1. the collector with real time monitoring function is characterized in that: include laser beam emitting device, fine particle harvester and laser receiver;
Wherein, this fine particle harvester comprises housing, apart sampling channel and the classification passage that is arranged in the housing;
This housing top offers total air intake opening, these classification passage two ends are formed with respectively the first air intake opening, the first gas outlet, this the first air intake opening spacing is arranged at total air intake opening below and faces with total air intake opening, and this total air intake opening is positioned at the first air intake opening fully in the view field of vertical direction projection in plane, the first air intake opening place; Between the first air intake opening and the first gas outlet, be provided with in this classification passage for the first collecting unit that captures coarseparticulate; This first gas outlet is opened in the housing side, and place, the first gas outlet is connected with the first suction pump;
These sampling channel two ends are formed with respectively the second air intake opening, the second gas outlet; With total air intake opening is oblique communicates, this second gas outlet is opened on the housing this second air intake opening and the second suction pump is located to be connected with in this second gas outlet by the spacing between the first air intake opening and total air intake opening; Between the second air intake opening and the second gas outlet, be provided with barrier plate in this sampling channel, offer pod apertures on this barrier plate, in this pod apertures, be provided with for the second collecting unit that captures fine particle;
This laser beam emitting device is positioned at the aforementioned sample passage and is positioned at position directly over the pod apertures, and this laser beam emitting device is launched over against pod apertures and the laser beam of passing the second collecting unit; The oblique setting of the relative beam direction of airflow direction between aforementioned the second collecting unit and the second gas outlet;
This laser receiver comprises receiving element and computing unit, this receiving element is positioned under the pod apertures, the laser beam of this laser beam emitting device emission enters the receiving element of laser receiver behind the second collecting unit, this computing unit goes out the concentration of the fine particle that captures on the second collecting unit according to the strong calculated signals of receiving element institute photometry.
2. the collector with real time monitoring function according to claim 1, it is characterized in that: described the second collecting unit is wire netting.
3. the collector with real time monitoring function according to claim 2, it is characterized in that: also be provided with fixed head, the aforementioned metal net places on the fixed head.
4. the collector with real time monitoring function according to claim 3, it is characterized in that: described wire netting is arranged at the center of fixed head.
5. the collector with real time monitoring function according to claim 4 is characterized in that: be equipped with a plurality of wire nettings in the peripheral even distribution type of central metal net on the described fixed head.
6. the collector with real time monitoring function according to claim 1 is characterized in that: described the second collecting unit is that some mutual wound forms are filled in the metal fiber wire in the pod apertures.
7. the collector with real time monitoring function according to claim 1, it is characterized in that: described pod apertures is opened in the center of barrier plate.
8. the collector with real time monitoring function according to claim 7 is characterized in that: be equipped with a plurality of pod apertures in the peripheral even distribution type of central guiding discharge orifice on the described barrier plate.
9. the collector with real time monitoring function according to claim 1 is characterized in that: be formed with obliquely the drainage inclined-plane from pod apertures internal face upper end on the described barrier plate.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210399690.3A CN102914491B (en) | 2012-10-19 | 2012-10-19 | There is the collector of real time monitoring function |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210399690.3A CN102914491B (en) | 2012-10-19 | 2012-10-19 | There is the collector of real time monitoring function |
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| CN102914491A true CN102914491A (en) | 2013-02-06 |
| CN102914491B CN102914491B (en) | 2015-09-09 |
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| CN201210399690.3A Active CN102914491B (en) | 2012-10-19 | 2012-10-19 | There is the collector of real time monitoring function |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103674798A (en) * | 2013-12-30 | 2014-03-26 | 合肥京东方光电科技有限公司 | Air dust detection instrument |
| CN104677798A (en) * | 2015-03-30 | 2015-06-03 | 济南新活电器有限公司 | High-sensitivity air detector for acquiring signal by multi-grade laser net |
| CN105277474A (en) * | 2014-11-17 | 2016-01-27 | 北京至感传感器技术研究院有限公司 | Dust particle detection equipment |
| CN105424566A (en) * | 2014-11-10 | 2016-03-23 | 北京至感传感器技术研究院有限公司 | Dust particle detection device |
| CN106198328A (en) * | 2015-05-29 | 2016-12-07 | 富士通株式会社 | Measurement apparatus and the system of measurement |
| CN108956405A (en) * | 2018-09-21 | 2018-12-07 | 云南武易高速公路建设指挥部 | A kind of engineering construction atmospheric environment dust monitoring method |
| CN109060622A (en) * | 2018-09-21 | 2018-12-21 | 云南武易高速公路建设指挥部 | A kind of atmospheric environment lung particulate matter monitoring device for engineering construction |
| CN109060621A (en) * | 2018-09-21 | 2018-12-21 | 云南武易高速公路建设指挥部 | A kind of monitoring device of powder-like waste for highway engineering |
| CN109238932A (en) * | 2018-09-21 | 2019-01-18 | 中国科学院地质与地球物理研究所 | A kind of highway engineering atmospheric environment lung particulate matter monitoring method |
| CN109655387A (en) * | 2018-12-20 | 2019-04-19 | 温州佳旭建设监理咨询有限公司 | A kind of monitoring device of powder-like waste at construction supervision scene |
| CN110057985A (en) * | 2019-05-29 | 2019-07-26 | 兰州易助科研设备科技有限公司 | A kind of high-altitude monitoring device |
| CN112630397A (en) * | 2020-12-14 | 2021-04-09 | 中国兵器工业第五九研究所 | Rainwater monitoring device |
| CN113203665A (en) * | 2020-01-21 | 2021-08-03 | 大唐环境产业集团股份有限公司 | Method for detecting granularity and particle size distribution of coal as fired |
| CN113310853A (en) * | 2020-02-27 | 2021-08-27 | 北京慧荣和科技有限公司 | Aerodynamic particle size testing device |
| CN113405867A (en) * | 2021-07-26 | 2021-09-17 | 天津环科环境规划科技发展有限公司 | Particulate matter sampling device and particulate matter detection device |
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Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103674798A (en) * | 2013-12-30 | 2014-03-26 | 合肥京东方光电科技有限公司 | Air dust detection instrument |
| CN105424566A (en) * | 2014-11-10 | 2016-03-23 | 北京至感传感器技术研究院有限公司 | Dust particle detection device |
| CN105277474A (en) * | 2014-11-17 | 2016-01-27 | 北京至感传感器技术研究院有限公司 | Dust particle detection equipment |
| CN104677798A (en) * | 2015-03-30 | 2015-06-03 | 济南新活电器有限公司 | High-sensitivity air detector for acquiring signal by multi-grade laser net |
| CN106198328A (en) * | 2015-05-29 | 2016-12-07 | 富士通株式会社 | Measurement apparatus and the system of measurement |
| CN109238932A (en) * | 2018-09-21 | 2019-01-18 | 中国科学院地质与地球物理研究所 | A kind of highway engineering atmospheric environment lung particulate matter monitoring method |
| CN109060622A (en) * | 2018-09-21 | 2018-12-21 | 云南武易高速公路建设指挥部 | A kind of atmospheric environment lung particulate matter monitoring device for engineering construction |
| CN109060621A (en) * | 2018-09-21 | 2018-12-21 | 云南武易高速公路建设指挥部 | A kind of monitoring device of powder-like waste for highway engineering |
| CN108956405A (en) * | 2018-09-21 | 2018-12-07 | 云南武易高速公路建设指挥部 | A kind of engineering construction atmospheric environment dust monitoring method |
| CN109655387A (en) * | 2018-12-20 | 2019-04-19 | 温州佳旭建设监理咨询有限公司 | A kind of monitoring device of powder-like waste at construction supervision scene |
| CN109655387B (en) * | 2018-12-20 | 2021-07-20 | 温州佳旭建设监理咨询有限公司 | A dust monitoring devices for in building supervision scene |
| CN110057985A (en) * | 2019-05-29 | 2019-07-26 | 兰州易助科研设备科技有限公司 | A kind of high-altitude monitoring device |
| CN110057985B (en) * | 2019-05-29 | 2024-04-26 | 兰州易助科研设备科技有限公司 | High altitude monitoring facilities |
| CN113203665A (en) * | 2020-01-21 | 2021-08-03 | 大唐环境产业集团股份有限公司 | Method for detecting granularity and particle size distribution of coal as fired |
| CN113203665B (en) * | 2020-01-21 | 2023-01-20 | 大唐环境产业集团股份有限公司 | Method for detecting granularity and particle size distribution of coal as fired |
| CN113310853A (en) * | 2020-02-27 | 2021-08-27 | 北京慧荣和科技有限公司 | Aerodynamic particle size testing device |
| CN112630397A (en) * | 2020-12-14 | 2021-04-09 | 中国兵器工业第五九研究所 | Rainwater monitoring device |
| CN113405867A (en) * | 2021-07-26 | 2021-09-17 | 天津环科环境规划科技发展有限公司 | Particulate matter sampling device and particulate matter detection device |
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