CN2504627Y - Fume, smoke discharge monitoring device - Google Patents
Fume, smoke discharge monitoring device Download PDFInfo
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- CN2504627Y CN2504627Y CN 01254195 CN01254195U CN2504627Y CN 2504627 Y CN2504627 Y CN 2504627Y CN 01254195 CN01254195 CN 01254195 CN 01254195 U CN01254195 U CN 01254195U CN 2504627 Y CN2504627 Y CN 2504627Y
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- lens
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- optical fiber
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- spectrometer
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Abstract
The utility model relates to a soot and fume emission detecting device and is characterized in that the two inner sides of the soot and fume emission region are provided with a light transmitter, a light receiver, an optical spectrometer, a computer and an air supply. The outlet of the light receiver is connected with the computer through the optical spectrometer, and then is analyzed by the optical spectrometer, and the signal is transmitted to the computer to be analyzed and processed. The air supply providing air is connected with the light transmitter and the optical receiver by the pipeline. The device having stationary type and portable type has the advantages of on-line detection of soot and fume at the same time, compact structure, low production cost, convenient installation, simple operation, high detecting precision, and can realize the distant, real-time, on-line and continuous surveying.
Description
Technical field:
The utility model relates to a kind of discharging is monitored to pollution source flue dust, fume emission monitoring device device in the environment monitoring field.
Background technology:
Industrial high speed development has caused severe contamination to environment, and air quality obviously worsens.Gross contamination thing in many urban atmospheres is high, has restricted sustainable development of economy to a certain extent.In administering and controling environment pollution, realization is crucial to the monitoring and the measurement of flue dust, smoke emissioning concentration and the total emission volumn of atmospheric pollution source emission.Usually flue dust, fume emission monitoring system are by flue dust (solid contaminant) monitoring subsystem; The gaseous contaminant monitoring subsystem; Gas Parameters monitoring subsystem and compositions such as data acquisition process and communication subsystem.Such monitoring system complex structure is huge, the installation difficulty, and the cost height.
Summary of the invention:
The purpose of this utility model provides a kind of concentration and total emission volumn and flue gas flow rate that utilizes a device can monitor flue dust, gaseous contaminant simultaneously, thereby online in real time obtains the flue dust of atmospheric pollution source emission, the concentration of flue gas and the method for total emission volumn.Light scattering method is adopted in the measurement of flue dust, adopts spectrum particular spectral lines or wave band absorption process to measure gaseous contaminant, and measures the flow velocity and the discharge capacity of flue gas with the optical method of twin-beam.
The utility model is based on following principle of work:
1. use particle size and the concentration that the scattering of light principle is measured particle system, because the perspectivity of light, be easy to realize the conversion between the photoelectricity, when light beam irradiates is in measurement zone, because particle is to scattering of light and absorption, the light intensity that the light of measurement zone is crossed in transmission will decay.By the Lambert-Beer law:
In the formula: I is a transmitted light intensity, I
0Be incident intensity, L is the stroke of measuring beam in measurement zone, N
iBe particle phase volume concentration, D
iBe the mean grain size of particle, E is an extinction coefficient.
Find the solution the particle phase volume concentration N that can obtain after this system of equations under each particle diameter
iValue, at this moment, the particle weight in the unit volume (concentration) can be tried to achieve by following formula:
2. the retrieving concentration method in the utilization optical absorption spectra technology is carried out analysis to measure to flue gas, the optical absorption spectra method be utilize absorb molecule Zi outside come analytical gas composition (CH to the characteristic absorption of visible waveband
4, NO
x, SO
2, O
3Deng), thereby realization is to the monitoring of harmful gas.This method also is based on Lambert-Beer law: I (λ)=I
0(λ) F (λ) exp (LC σ (λ)) (3)
In the formula: I (λ) is a transmitted light intensity, I
0(λ) be incident intensity, C represents to absorb the concentration of composition, and σ (λ) is corresponding absorption cross section, and F (λ) has represented owing to the atmospheric molecule scattering, the strength degradation that transmissivity of optical system etc. cause, and λ is a wavelength.
Introduce difference density D ` (λ), then (3) formula can be rewritten as:
D ' (λ)=ln[I
0' (λ)/I (λ)]=LC σ ' is (λ) in (4) formula: I`
0(λ)=I
0(λ) F (λ) is the baseline of artificial definition, and σ ` (λ) is the so-called difference cross section of removing wideband structural, and therefore, the concentration C that absorbs molecule has
C=D ' (λ)/[L σ ' (λ)] (5) is known by the correlation speed measurement principle, if can record in the flow field the time dependent sequence of some physical quantity relevant between 2 with particle speed, and supposition particle movement velocity between these 2 is constant, then obtain this 2 seasonal effect in time series cross correlation functions, just can try to achieve the speed of particle with relevant function method:
Here 1 is 2 distances between measuring point.
On the basis of above-mentioned principle; light scattering method is adopted in the measurement of flue dust; adopt spectrum particular spectral lines or wave band absorption process to measure gaseous contaminant; and measure the flow velocity and the discharge capacity of flue gas with the optical method of twin-beam; therefore scheme of the present utility model is to adopt optical detection; spectral analysis; concrete flue dust; fume emission monitoring device device; be characterized in; it comprises flue dust; both sides in the zone of fume emission are equipped with optical transmitting set and optical receiver; spectrometer; computing machine and source of the gas; the output of optical receiver is connected with computing machine through spectrometer, and the source of the gas of supplying with blanket gas is connected with optical receiver with optical transmitting set by pipeline.
Advantage of the present utility model:
1, can carry out the on-line monitoring of flue dust, flue gas with a covering device simultaneously, apparatus structure compactness, cost are low, easy for installation.
2, this device can be realized remote, real-time, the online and continuous coverage to tall and big emission source, directly provides in the flue gas with mgm
-3The smoke dust discharge concentration of expression need not to demarcate.
3, this device can have two kinds of different application modes, and the one, fixed, be about to whole device and be installed on the flue; Another kind of application form is that entire measuring device is designed to the portable of elongated rod-type, for the irregular monitoring of environmental protection administrative authority to arbitrary air pollution emission source.
4, can monitor and estimate the performance and the running status of the employed separation equipment in flue upstream according to measurement result, also can in time find the more operating undesired factors of heat power equipment.
5, the measuring accuracy height is simple, convenient.
Whole measuring system is installed on flue or other pollution source discharge tubes, all signals all can pass in the central station of floating dock, obtain concentration and the total emission volumn and the flue gas flow rate of flue dust, gaseous contaminant by all data of Computer Processing, with the measurement result print record and be stored in the computing machine, thereby the flue dust to the atmospheric pollution source emission, the concentration of flue gas and real-time, online, remote, the continuous and quantitative monitoring of total emission volumn have been realized.
Description of drawings:
Fig. 1 is that an embodiment of the present utility model is formed synoptic diagram;
Fig. 2 is another example structure synoptic diagram of the present utility model.
Embodiment:
Embodiment 1
By shown in Figure 1; present embodiment comprises optical transmitting set; optical receiver; spectrometer; computing machine and source of the gas; optical transmitting set comprises light source 1; coupled lens 2; optical fiber 3; collimation lens 4; optical receiver comprises receiver lens 8; optical fiber 9; the light that light source 1 is sent is through behind the coupled lens 2; be transferred to the collimation lens 4 that is installed on the pollution source discharge tube through optical fiber 3; by injecting in the blow-off line 6 behind collimation lens 4 collimations; light beam enters the receiver lens 8 that is installed in the pipeline opposite side after passing blow-off line 6; receive after optical fiber 9 is delivered to polynary spectrometer 10 analyzes and transfer signals to and carry out data analysis in the computing machine 5 and handle by receiver lens 8; be transported to the air intake 7 of detector by gas piping by the blanket gas of source of the gas 12 supplies; on 11, send in the detector.
Embodiment 2:
It is the portable flue dust of elongated rod-type as shown in Figure 2, the fume emission monitoring device, it is also by optical transmitting set, optical receiver, spectrometer, computing machine and source of the gas are formed, optical transmitting set comprises light source 16, coupled lens 17, optical fiber 18, lens 19, optical receiver comprises reception catoptron 22, receive optical fiber 27, optical transmitting set and optical receiver place measurement zone 24 both sides in the elongated housing 28, the corresponding lens 19 in measurement zone 24 both sides, catoptron 22 has aperture 20,21, optical receiver is connected with computing machine 13 through spectrometer 14, the light that light source 16 is sent is gone in the optical fiber 18 through coupled lens 17 coupling is laggard, light beam is injected in the measurement zone 24 by measured hole 20 behind lens 19, pass measurement zone and arrive catoptrons 22 reflection backs through aperture 21 and return, behind lens 19, enter and receive optical fiber 27 and send into spectrometer 14 and carry out signal analysis and send into and handle calculating in the computing machine 13 along former road.This device can directly insert measuring head can measure by the opening part of flue during use for the irregular monitoring of environmental protection administrative authority to arbitrary emission source.
Claims (3)
1, a kind of flue dust, fume emission monitoring device device; it is characterized in that; the interior both sides, zone that it is included in flue dust, fume emission are equipped with optical transmitting set and optical receiver, spectrometer, computing machine and source of the gas; the output of optical receiver is connected with computing machine through spectrometer, and the source of the gas of supplying with blanket gas is connected with optical receiver with optical transmitting set by pipeline.
2, flue dust according to claim 1, fume emission monitoring device device, it is characterized in that, described optical transmitting set comprises light source (1), coupled lens (2), optical fiber (3), collimation lens (4), optical receiver comprises receiver lens (8), optical fiber (9), behind the light process coupled lens (2) that light source (1) is sent, be transferred to the collimation lens (4) that is installed on the pollution source discharge tube through optical fiber (3), by injecting in the blow-off line (6) behind collimation lens (4) collimation, light beam enters the receipts lens (8) that are installed in the pipeline opposite side after passing blow-off line (6), is received after optical fiber (9) is delivered to polynary spectrometer (10) analyzes and transfer signals to and carry out data analysis in the computing machine (5) and handle by receiver lens (8).
3, flue dust according to claim 1, fume emission monitoring device device, it is characterized in that, described optical transmitting set comprises light source (16), coupled lens (17), optical fiber (18), lens (19), optical receiver comprises reception catoptron (22), receive optical fiber (27), optical transmitting set and optical receiver place the interior measurement zone of an elongated housing (28) (24) both sides, the corresponding lens (19) in measurement zone (24) both sides, catoptron (22) has aperture (20,21), optical receiver is connected with computing machine (13) through spectrometer (14), the light that light source (16) is sent is gone in the optical fiber (18) through coupled lens (17) coupling is laggard, light beam is injected in the measurement zone (24) by measured hole (20) behind lens (19), pass measurement zone and arrive catoptron (22) reflection back through aperture (21) and return, behind lens (19), enter and receive optical fiber (27) and send into spectrometer (14) and carry out signal analysis and send into processing calculating in computing machine (13) along former road.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01254195 CN2504627Y (en) | 2001-10-16 | 2001-10-16 | Fume, smoke discharge monitoring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01254195 CN2504627Y (en) | 2001-10-16 | 2001-10-16 | Fume, smoke discharge monitoring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2504627Y true CN2504627Y (en) | 2002-08-07 |
Family
ID=33663567
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01254195 Expired - Fee Related CN2504627Y (en) | 2001-10-16 | 2001-10-16 | Fume, smoke discharge monitoring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2504627Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103983601A (en) * | 2014-06-04 | 2014-08-13 | 江南大学 | Infrared optical fiber oil fume concentration sensor |
| CN104458662A (en) * | 2014-12-23 | 2015-03-25 | 安徽助成信息科技有限公司 | Absorptive smoke and dust turbidity detection system |
| CN108844870A (en) * | 2018-08-08 | 2018-11-20 | 重庆交通大学 | PM based on optical fiber structure10And PM2.5Detection instrument device and system |
| CN109270020A (en) * | 2018-10-25 | 2019-01-25 | 中国科学技术大学 | A kind of adjustable infrared-gas measurement of concetration structure of light path |
-
2001
- 2001-10-16 CN CN 01254195 patent/CN2504627Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103983601A (en) * | 2014-06-04 | 2014-08-13 | 江南大学 | Infrared optical fiber oil fume concentration sensor |
| CN104458662A (en) * | 2014-12-23 | 2015-03-25 | 安徽助成信息科技有限公司 | Absorptive smoke and dust turbidity detection system |
| CN108844870A (en) * | 2018-08-08 | 2018-11-20 | 重庆交通大学 | PM based on optical fiber structure10And PM2.5Detection instrument device and system |
| CN108844870B (en) * | 2018-08-08 | 2021-09-21 | 重庆交通大学 | PM based on optical fiber structure10And PM2.5Probe instrument apparatus and system |
| CN109270020A (en) * | 2018-10-25 | 2019-01-25 | 中国科学技术大学 | A kind of adjustable infrared-gas measurement of concetration structure of light path |
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| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |