CN102914491B - There is the collector of real time monitoring function - Google Patents
There is the collector of real time monitoring function Download PDFInfo
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- CN102914491B CN102914491B CN201210399690.3A CN201210399690A CN102914491B CN 102914491 B CN102914491 B CN 102914491B CN 201210399690 A CN201210399690 A CN 201210399690A CN 102914491 B CN102914491 B CN 102914491B
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- air intake
- intake opening
- collecting unit
- pod apertures
- laser beam
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Abstract
The present invention discloses a kind of collector with real time monitoring function, comprises laser beam emitting device, fine particle harvester and laser receiver; This fine particle harvester comprises housing, be separated by and be arranged at sampling channel in housing and classification passage; Classification passage carries out gradation first to the gas entered in housing, and larger particles is discharged via classification passage, and the relatively fine particle of required monitoring enters in sampling channel; Be provided with barrier plate in sampling channel, this barrier plate offers pod apertures, in this pod apertures, be provided with the second collecting unit for trapping fine particle; This laser beam emitting device is positioned at position directly over pod apertures, the receiving element of this laser receiver is positioned at immediately below pod apertures, the laser beam that laser beam emitting device is launched enters the receiving element of laser receiver after the second collecting unit, the computing unit of this laser receiver according to receiving element survey light intensity signal to calculate on the second collecting unit trap the concentration of fine particle.
Description
Technical field
The present invention relates to the apparatus field technology of the particle sampling in air, refer in particular to a kind of collector with real time monitoring function.
Background technology
Along with industrial expansion, the particulate pollutant degree in air constantly increases, and these particulate pollutants can damage nervous system and the various objectionable impurities such as carcinogenic in absorbed air, bring a lot of negative effect to environment and human health.And how grain size segregation and demarcation are carried out to the particle in air, be research and the matter of utmost importance solving Atmospheric Particulate Matter.
People adopt particle sampling systems to obtain the particle of appropriate level in air, to carry out effective determination and analysis to air quality or pollution index etc.Usually, impact sampler is adopted to carry out grain size segregation sampling, as the technical scheme disclosed in patent documentation CN2301722Y, CN2709035Y; The structure that current classification collides device mainly includes housing and is arranged at the sampling channel in housing, multistage collision collection group is disposed with along airflow direction in this sampling channel, gas flows through multistage collision collection group successively after entering sampling channel, the particle (nanoparticles such as such as PM10, PM2.5, PM1 and PM0.1) of various different-grain diameter is separated to come, these particulates in classification are weighed, analyzes, just can obtain the data of reflection air quality or pollution index.
The process above-mentionedly carried out by the particle collected weighing, analyze, 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 is to provide a kind of collector with real time monitoring function, its can in real time, precise monitoring to go out on the second collecting unit trap the concentration of fine particle.
For achieving the above object, the present invention adopts following technical scheme:
There is a collector for real time monitoring function, include laser beam emitting device, fine particle harvester and laser receiver;
Wherein, this fine particle harvester comprises housing, is separated by and is arranged at sampling channel in housing and classification passage;
This housing tip offers total air intake opening, these classification passage two ends are formed with the first air intake opening, the first gas outlet respectively, this the first air intake opening spacing to be arranged at below total air intake opening and to face with total air intake opening, and the view field that this total air intake opening is projected on the first air intake opening place plane in vertical direction is positioned at the first air intake opening completely; Between the first air intake opening and the first gas outlet, the first collecting unit for trapping coarseparticulate is provided with in this classification passage; This first gas outlet is opened in housing side, and the first gas outlet place is connected with the first suction pump;
These sampling channel two ends are formed with the second air intake opening, the second gas outlet respectively; This second air intake opening is communicated with total air intake opening is oblique by the spacing between the first air intake opening with total air intake opening, and this second gas outlet is opened on housing and this second gas outlet place is connected with the second suction pump; Between the second air intake opening and the second gas outlet, be provided with barrier plate in this sampling channel, this barrier plate offer pod apertures, in this pod apertures, is provided with the second collecting unit for trapping fine particle;
This laser beam emitting device is positioned at aforementioned sample passage and is positioned at position directly over pod apertures, and this laser beam emitting device launches the laser beam of just pod apertures also being passed to the second collecting unit; The oblique setting of airflow direction relative laser Shu Fangxiang between aforementioned second collecting unit and the second gas outlet;
This laser receiver comprises receiving element and computing unit, this receiving element is positioned at immediately below pod apertures, the laser beam that this laser beam emitting device is launched enters the receiving element of laser receiver after the second collecting unit, this computing unit according to receiving element survey light intensity signal to calculate on the second collecting unit trap the concentration of fine particle.
As a kind of preferred version, described second collecting unit system wire netting.
As a kind of preferred version, be also provided with fixed head, aforementioned metal net is placed on 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, described fixed head is equipped with multiple wire netting in the peripheral even distribution type of central metal net.
As a kind of preferred version, the described second some mutual wound forms of collecting unit system are filled in the metal fiber wire in 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, described barrier plate is equipped with multiple pod apertures in the peripheral even distribution type of central guiding discharge orifice.
As a kind of preferred version, described barrier plate is formed with drainage inclined-plane obliquely from pod apertures internal face upper end.
The present invention compared with prior art has obvious advantage and beneficial effect, specifically, as shown from the above technical solution, it is mainly utilize classification passage to carry out gradation first to the gas entered in housing, larger particles is discharged via classification passage, the relatively fine particle of required monitoring enters in sampling channel, and relatively fine particle thing is caught to combine on the second collecting unit, then got on the receiver of laser receiver through the second collecting unit by laser beam emitting device Emission Lasers bundle, with laser beam after the particle on the second collecting unit the decay of laser and the scattering of light for foundation, computing unit according to receiving element survey light intensity signal to calculate on the second collecting unit trap the concentration of fine particle, it can carry out Real-Time Monitoring and monitoring result is accurate, eliminate in conventional art and the particle collected is weighed, analyze, the complex process calculated, bring facility.
For more clearly setting forth architectural feature of the present invention and effect, below in conjunction with accompanying drawing and specific embodiment, the present invention is described in detail.
Accompanying drawing explanation
Fig. 1 is the one-piece construction schematic cross-section of the preferred embodiment of the present invention;
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 multiple wire netting on fixed head;
Fig. 6 is the distributing position schematic diagram of pod apertures on barrier plate in the preferred embodiment of the present invention;
Fig. 7 is the distributing position schematic diagram of pod apertures on barrier plate in the preferred embodiment of the present invention;
Fig. 8 is the cross section enlarged diagram at M-M place in Fig. 7.
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, first suction pump
216, the first collecting unit
22, the second air intake opening 23, second gas outlet
24, barrier plate 241, pod apertures
242, drainage inclined-plane 25, 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 Fig. 1, that show the concrete structure of the preferred embodiment of the present invention, include laser beam emitting device 10, fine particle harvester 20 and laser receiver 30.
Wherein, this fine particle harvester 20 comprises housing 21, is separated by and is arranged at classification passage 213 in housing 21 and sampling channel 26;
This housing 21 top offers total air intake opening 211, these classification passage 213 two ends are formed with the first air intake opening 212, first gas outlet 214 respectively, this the first air intake opening 212 spacing to be arranged at below total air intake opening 211 and to face with total air intake opening 211, and the view field that this total air intake opening 211 is projected on the first air intake opening 212 place plane in vertical direction is positioned at the first air intake opening 212 completely; Between the first air intake opening and the first gas outlet, be provided with the first collecting unit for trapping 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 side, and the first gas outlet 214 place is connected with the first suction pump 215; It should be noted that, aforementioned first collecting unit can adopt the filter membrane structure for trap particulate matter of conventional design, or, the design of the concrete structure that adopts following second collecting unit to implement also can, this is not restricted.
These sampling channel 26 two ends are formed with the second air intake opening 22, second gas outlet 23 respectively; This second air intake opening 22 is communicated with total air intake opening 211 is oblique by the spacing between the first air intake opening 212 with total air intake opening 211, and this second gas outlet 22 is opened on housing 21 and this second gas outlet 23 place is connected with the second suction pump 27; Between the second air intake opening 22 and the second gas outlet 23, barrier plate 24 is provided with in this sampling channel 26, this barrier plate 24 offers pod apertures 241, barrier plate 24 is formed with drainage inclined-plane 242 obliquely from pod apertures 241 internal face upper end, in this pod apertures 241, is provided with the second collecting unit 25 for trapping fine particle.As shown in Figure 1, this second collecting unit 25 is the metal fiber wire of the some mutual winding be filled in pod apertures 241.
Certainly, aforementioned second collecting unit 25 also can be designed to wire netting or other suitable construction, as shown in Figure 2 to Figure 3, aforementioned second collecting unit 25 is metal mesh structure, these some layers of metallized metal nets about 251 are stacked and placed on together (as shown in Figure 2), pore 2511 on adjacent double layer of metal wire netting 251 staggers setting, and is formed with gap between adjacent two layers wire netting 251.Wire netting 251 can be installed on fixed head 252, and at least the upper end of fixed head 252 protrudes from the upper surface of wire netting 251, so, is directly superposed by multiple layer metal net 251; The setting position of wire netting 251 on fixed head 252 can have multiple, and such as, as shown in Figure 4, wire netting 251 position is one, and it is arranged at the center of fixed head 252; As shown in Figure 5, every layer of wire netting includes multiple wire nettings 251 of level interval setting, one of them wire netting 251 is positioned at fixed head 252 center, it is peripheral that all the other wire netting 251 even distribution types are located on central metal net 251, structural design like this, make air-flow more even, be more conducive to gather particle.
As shown in Figure 6 to 8, pod apertures 241 distributing position on aforementioned barrier plate 24 also can have multiple, and such as, 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 multiple, 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 central guiding discharge orifice, and concrete pod apertures size and quantity are not limited in any way at this.
This laser beam emitting device 10 is positioned at aforementioned sample passage 26 and is positioned at position directly over pod apertures 241, and this laser beam emitting device 10 launches the laser beam of just pod apertures 241 also being passed to the second collecting unit 25; The oblique setting of airflow direction relative laser Shu Fangxiang between aforementioned 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 side, it is communicated with inside and outside housing 21 sidewall, and utilize the second suction pump 27 to aspirate to form directed air-flow to it, structural design like this, flows away gas in the gas outlet 23 of housing 21 side via after following second collecting unit 25; Certainly, design attitude and the structure of the second gas outlet 23 are not limited thereto, and it can design below housing 21, as long as the second gas outlet 23 not facing laser receiver 30, enter in laser receiver 30 to avoid air-flow.
This laser receiver 30 comprises receiving element and computing unit, this receiving element is positioned at immediately below pod apertures 241, the laser beam that this laser beam emitting device 10 is launched enters the receiving element of laser receiver 30 after the second collecting unit 25, this computing unit according to the light-metering of receiving element institute to calculate by force on the second collecting unit 24 trap the concentration of fine particle.
Sketch principle of work of the present invention as follows:
One, gas enters after in housing via total air intake opening, because the difference of aforementioned first suction pump, the second suction pump is arranged, classification passage is utilized to carry out gradation first to the gas entered in housing, larger particles is caught to combine on the first collecting unit, the particle filtered is discharged via classification passage in company with gas, and the relatively fine particle (such as PM2.5) of required monitoring enters in sampling channel in company with gas;
Two, before aforementioned PM2.5 air-flow enters sampling channel, laser beam emitting device 10 is just to pod apertures 241 Emission Lasers bundle, laser beam is non-trap particulate matter on the second collecting unit 25(now the second collecting unit 25) then to get on the receiving element 31 of laser receiver 30, initial beam intensity signal measured by this receiving element 31 also transfers to computing unit 32;
Three, aforementioned PM2.5 air-flow enters in sampling channel through the second air intake opening 22, and part fine particle stops by the second collecting unit 25 and stays on the second collecting unit 25;
Laser beam emitting device 10 is just to pod apertures 241 Emission Lasers bundle, laser beam traps on the second collecting unit 25(now the second collecting unit 25 particle) then to get on the receiving element 31 of laser receiver 30, the measured light intensity signal in real time of this receiving element 31 also transfers to computing unit 32; Along with the particle that the second collecting unit 25 traps increase time, the light intensity of laser beam after the second collecting unit 25 can decay gradually, so according to laser beam light intensity change by computing unit 25 can real-time operation to go out on the second collecting unit 25 trap the concentration of fine particle.
Design focal point of the present invention is, main system utilizes classification passage to carry out gradation first to the gas entered in housing, larger particles is discharged via classification passage, the relatively fine particle of required monitoring enters in sampling channel, and relatively fine particle thing is caught to combine on the second collecting unit, then got on the receiver of laser receiver through the second collecting unit by laser beam emitting device Emission Lasers bundle, with laser beam after the particle on the second collecting unit the decay of laser and the scattering of light for foundation, computing unit according to receiving element survey light intensity signal to calculate on the second collecting unit trap the concentration of fine particle, it can carry out Real-Time Monitoring and monitoring result is accurate, eliminate in conventional art and the particle collected is weighed, analyze, the complex process calculated, bring facility.
The above, it is only preferred embodiment of the present invention, not technical scope of the present invention is imposed any restrictions, thus every above embodiment is done according to technical spirit of the present invention any trickle amendment, equivalent variations and modification, all still belong in the scope of technical solution of the present invention.
Claims (9)
1. there is a collector for real time monitoring function, it is characterized in that: include laser beam emitting device, fine particle harvester and laser receiver;
Wherein, this fine particle harvester comprises housing, is separated by and is arranged at sampling channel in housing and classification passage;
This housing tip offers total air intake opening, these classification passage two ends are formed with the first air intake opening, the first gas outlet respectively, this the first air intake opening spacing to be arranged at below total air intake opening and to face with total air intake opening, and the view field that this total air intake opening is projected on the first air intake opening place plane in vertical direction is positioned at the first air intake opening completely; Between the first air intake opening and the first gas outlet, the first collecting unit for trapping coarseparticulate is provided with in this classification passage; This first gas outlet is opened in housing side, and the first gas outlet place is connected with the first suction pump;
These sampling channel two ends are formed with the second air intake opening, the second gas outlet respectively; This second air intake opening is positioned at by the side of the first air intake opening, and this second air intake opening is communicated with total air intake opening is oblique by the spacing between the first air intake opening with total air intake opening, and this second gas outlet is opened on housing and this second gas outlet place is connected with the second suction pump; Between the second air intake opening and the second gas outlet, be provided with barrier plate in this sampling channel, this barrier plate offer pod apertures, in this pod apertures, is provided with the second collecting unit for trapping fine particle;
This laser beam emitting device is positioned at aforementioned sample passage and is positioned at position directly over pod apertures, and this laser beam emitting device launches the laser beam of just pod apertures also being passed to the second collecting unit; The oblique setting of airflow direction relative laser Shu Fangxiang between aforementioned second collecting unit and the second gas outlet;
This laser receiver comprises receiving element and computing unit, this receiving element is positioned at immediately below pod apertures, the laser beam that this laser beam emitting device is launched enters the receiving element of laser receiver after the second collecting unit, this computing unit according to receiving element survey light intensity signal to calculate on the second collecting unit trap the concentration of fine particle.
2. the collector with real time monitoring function according to claim 1, is characterized in that: described second collecting unit system wire netting.
3. the collector with real time monitoring function according to claim 2, is characterized in that: be also provided with fixed head, and aforementioned metal net is placed on fixed head.
4. the collector with real time monitoring function according to claim 3, 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: described fixed head is equipped with multiple wire netting in the peripheral even distribution type of central metal net.
6. the collector with real time monitoring function according to claim 1, is characterized in that: the described second some mutual wound forms of collecting unit system are filled in the metal fiber wire in pod apertures.
7. the collector with real time monitoring function according to claim 1, 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: described barrier plate is equipped with multiple pod apertures in the peripheral even distribution type of central guiding discharge orifice.
9. the collector with real time monitoring function according to claim 1, is characterized in that: described barrier plate is formed with drainage inclined-plane obliquely from pod apertures internal face upper end.
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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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| CN201210399690.3A CN102914491B (en) | 2012-10-19 | 2012-10-19 | There is the collector of real time monitoring function |
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| CN102914491B true CN102914491B (en) | 2015-09-09 |
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| CN103674798B (en) * | 2013-12-30 | 2016-03-16 | 合肥京东方光电科技有限公司 | A kind of 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 |
| JP6515683B2 (en) * | 2015-05-29 | 2019-05-22 | 富士通株式会社 | Measuring device and measuring system |
| CN109238932B (en) * | 2018-09-21 | 2021-02-05 | 中国科学院地质与地球物理研究所 | Method for monitoring particles capable of entering lung in atmospheric environment of highway engineering |
| CN109060621B (en) * | 2018-09-21 | 2021-03-02 | 云南武易高速公路建设指挥部 | A dust monitoring devices for highway engineering |
| CN108956405B (en) * | 2018-09-21 | 2021-03-02 | 云南武易高速公路建设指挥部 | Engineering construction atmospheric environment dust monitoring method |
| CN109060622B (en) * | 2018-09-21 | 2021-02-05 | 云南武易高速公路建设指挥部 | Atmospheric environment accessible lung particulate monitoring device for engineering construction |
| 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 |
| 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 |
| CN112630397B (en) * | 2020-12-14 | 2022-10-25 | 中国兵器工业第五九研究所 | Rainwater monitoring device |
| CN113405867B (en) * | 2021-07-26 | 2023-03-28 | 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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| JPS63154938A (en) * | 1986-12-19 | 1988-06-28 | Agency Of Ind Science & Technol | Dust concentration measuring apparatus |
| US7022992B2 (en) * | 2002-01-17 | 2006-04-04 | American Air Liquide, Inc. | Method and apparatus for real-time monitoring of furnace flue gases |
| CN2760541Y (en) * | 2004-12-08 | 2006-02-22 | 中国科学院安徽光学精密机械研究所 | Aerosol particle separation sampler |
| JP4714915B1 (en) * | 2010-06-30 | 2011-07-06 | ニッタ株式会社 | Inertial filter and particle classifier |
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| CN202886239U (en) * | 2012-10-19 | 2013-04-17 | 东莞市汇海环保科技有限公司 | Collector with real-time monitoring function |
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