CN108801964A - It is a kind of directly to measure formula gaseous pollutant emission monitoring device - Google Patents
It is a kind of directly to measure formula gaseous pollutant emission monitoring device Download PDFInfo
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- CN108801964A CN108801964A CN201811100684.7A CN201811100684A CN108801964A CN 108801964 A CN108801964 A CN 108801964A CN 201811100684 A CN201811100684 A CN 201811100684A CN 108801964 A CN108801964 A CN 108801964A
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- 239000003344 environmental pollutant Substances 0.000 title claims abstract description 61
- 231100000719 pollutant Toxicity 0.000 title claims abstract description 61
- 238000012806 monitoring device Methods 0.000 title claims abstract description 21
- 239000007789 gas Substances 0.000 claims abstract description 203
- 238000001514 detection method Methods 0.000 claims abstract description 105
- 239000000779 smoke Substances 0.000 claims abstract description 63
- 238000001914 filtration Methods 0.000 claims abstract description 45
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 39
- 239000001301 oxygen Substances 0.000 claims abstract description 39
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 39
- 239000003546 flue gas Substances 0.000 claims abstract description 36
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 35
- 238000010926 purge Methods 0.000 claims abstract description 33
- 238000000605 extraction Methods 0.000 claims abstract description 32
- 238000012360 testing method Methods 0.000 claims abstract description 29
- 230000003595 spectral effect Effects 0.000 claims abstract description 27
- 238000012545 processing Methods 0.000 claims abstract description 25
- 230000007246 mechanism Effects 0.000 claims abstract description 13
- 238000007664 blowing Methods 0.000 claims abstract description 11
- 238000001228 spectrum Methods 0.000 claims description 44
- 238000004458 analytical method Methods 0.000 claims description 36
- 239000000835 fiber Substances 0.000 claims description 33
- 238000004891 communication Methods 0.000 claims description 31
- 238000005259 measurement Methods 0.000 claims description 24
- 238000010183 spectrum analysis Methods 0.000 claims description 17
- 230000003287 optical effect Effects 0.000 claims description 10
- 239000013307 optical fiber Substances 0.000 claims description 10
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 238000005086 pumping Methods 0.000 claims description 3
- 230000002000 scavenging effect Effects 0.000 claims description 2
- 238000012544 monitoring process Methods 0.000 abstract description 8
- 239000000356 contaminant Substances 0.000 abstract description 2
- 239000000523 sample Substances 0.000 description 56
- 238000000738 capillary electrophoresis-mass spectrometry Methods 0.000 description 24
- 230000007613 environmental effect Effects 0.000 description 20
- 238000000034 method Methods 0.000 description 18
- 230000008569 process Effects 0.000 description 9
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- 239000013618 particulate matter Substances 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 7
- 238000007689 inspection Methods 0.000 description 7
- 238000010521 absorption reaction Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 239000007787 solid Substances 0.000 description 6
- 235000019504 cigarettes Nutrition 0.000 description 5
- 239000000243 solution Substances 0.000 description 5
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 3
- 238000011109 contamination Methods 0.000 description 3
- 238000010790 dilution Methods 0.000 description 3
- 239000012895 dilution Substances 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- RJIWZDNTCBHXAL-UHFFFAOYSA-N nitroxoline Chemical compound C1=CN=C2C(O)=CC=C([N+]([O-])=O)C2=C1 RJIWZDNTCBHXAL-UHFFFAOYSA-N 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 230000011514 reflex Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 239000012491 analyte Substances 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 235000019628 coolness Nutrition 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000027734 detection of oxygen Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000002803 fossil fuel Substances 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/33—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using ultraviolet light
Abstract
Formula gaseous pollutant emission monitoring device is directly measured the invention discloses a kind of, including testing agency, interrupter, extraction sector, calibrating device, blowing mechanism and central processing module, testing agency includes spectral detection module and sensing chamber, interrupter includes admission line and smoke valve, admission line and smoke valve are arranged in flue, it is arranged with smoke filtration cover outside admission line entrance, filter is equipped in admission line, admission line pipe shaft is communicated with standard gas pipeline, purging pipeline is communicated in smoke filtration cover, gas flow controller is equipped in pump-line；The present invention being capable of detection for gaseous contaminants accuracy, and it effectively solves tradition and directly measures the problems such as overproof when field calibration result existing for formula detection device is overproof, environment monitoring compares, and simple operation, it occupies little space, simultaneously, additionally it is possible to accurately measure, calculate the oxygen-containing concentration of emission of gaseous pollutant benchmark of flue gas.
Description
Technical field
The present invention relates to gaseous pollutant technical field of measuring equipment, more particularly to a kind of directly measurement formula gaseous pollutant
Emission monitoring device.
Background technology
Currently, the increasing with China to environment non-environmental-pollution management, national departments concerned has been formulated stringent
Atmosphere pollutants emission standards, in newest environment protectment protection《Stationary source flue gas（SO2,NOX, particulate matter）Discharge connects
Continuous monitoring system specifications and detection method》（HJ 76-2017）In, specify gas pollutant CEMS（Flue gas emission is continuous
Monitoring system）Type include complete extraction method, the direct method of measurement and dilution three kinds of extraction method.Due to the office of current detection technology
Sex-limited, the especially restriction of the detection technique of the gaseous pollutant concentration of emission containing particulate solid, China is existing at present
CEMS cannot be quickly detected from fixed pollution source smoke discharge situation, be primarily present following problem：
One, complete extraction method and dilution extraction method are extraction-type CEMS, and extraction-type CEMS is a kind of present the most commonly used inspection
Survey method can accurately detect fixed pollution source smoke discharge situation, and still, extraction-type CEMS lag times are long, for example,
For thermal power plant denitration CEMS, a length of 8 seconds or so when the reaction that flue gas is exported from ammonia-gas spraying device to denitration, in actual motion, survey
It measures result and lags about 220S or even longer than the practical flue gas pollutant state parameter of sample point, and the newest environment in China
Protective standard《Stationary source flue gas（SO2,NOX, particulate matter）Discharge continuous Specifications of Monitoring Technology》（HJ 75-2017）In
System response time≤200 second of gas pollutant CEMS when calibrating gas verification can only be distinctly claimed.Too because of lag time
Long, the existing environmental protection equipment in country thermal power plant cannot achieve automatic adjustment at present, can only use manual adjustment mode, and
Due to the long reason manual adjustment of lag and it is unreliable, effect is poor, causes that environmentally friendly parameter is frequently exceeded, spray ammonia is superfluous, cause
The subsequent equipment cisco unity malfunction of denitration causes air preheater blocking, deduster failure to cause compressor emergency shutdown, neither ring
It protects, it is also not energy-efficient, and security risk is very big.
Based on current existing CEMS technologies, substantially manually operation is completed for adjustment, the control of environmental protection equipment, environmental protection administration
Also it can only provide that NOx average values cannot be exceeded in a hour, and power environment protection detection department provides environmentally friendly parameter in one hour
No more than 15 times, even under the standard of " the relaxing ", the environmentally friendly parameter of the unit of gaseous contamination source monitoring also frequent frequency
It is numerous to be required beyond this standard.
Two, it is in a kind of blowdown place method measured directly directly to measure the CEMS of formula, and spectrum detection device is mounted directly to
At measuring point, flue gas is directly detected, detection speed is fast, is conducive to adjust environmental protection equipment, is conducive to control and prevention gaseous pollutant
Environmentally friendly parameter is not exceeded.But existing direct measurement formula measuring technique and device cannot meet environmental protection tests requirement, root at present
It is frequently overproof when carrying out Site Detection comparison to the CEMS of existing direct measuring according to by environmentally friendly related request, to existing
The CEMS of direct measuring it is usually overproof when being calibrated, do not meet environmental protection tests requirement.Now with environmental protection inspection
It puts more effort, the higher gaseous contamination source of content of each thermal power plant and particulate solid monitors unit, all eliminates
The CEMS for directly measuring formula, is replaced with extraction-type and the CEMS of dilution sampling formula, and the CEMS manufacturers of import brand also provide
Do not go out to meet the direct CEMS for measuring formula of environmental protection tests requirement.
Existing direct measurement formula gas pollutant measuring technique causes existing due to there is the technical bottleneck for being difficult to overcome
The direct basic function for measuring formula gas pollutant measuring device do not meet environmental protection tests requirement, and technical bottleneck includes mainly
Following several respects：
（1）The environment that the CEMS devices of directly measurement formula carry out when gaseous pollutant continuously monitors residing for measuring point is extremely severe, example
Such as, the temperature of the flue gas of thermal power plant's denitration CEMS measuring points is up to 370 more and spends, and dust-laden is larger, for example, using the cigarette of wet desulphurization
Air humidity degree is larger, and CEMS devices are affected by environment.The detection probe for directly measuring the CEMS devices of formula is mounted directly to fume pipe
In road, when using standard gas to CEMS device normalizations, standard gas enters flue gas inspection channel, and standard gas is mixed with flue gas, and when calibration enters
The gas of sense channel is the mixed gas of the uncertain standard gas of mixed proportion and flue gas rather than standard gas, it is calibrating the result is that
Uncertain, when directly resulting in environmentally friendly field calibration, calibration result is overproof, does not meet environmental protection supervision cigarette requirement；Therefore it directly surveys
The CEMS devices of amount formula generally use following methods to demarcate：It is inserted into the optical path and filter glass similar in pollutant absorption characteristic
Or " material object " eyeglass calculates calibration result using operation, because eyeglass and eyeglass in kind with standard gas detected status is inconsistent makes
It is overproof at environmentally friendly live contrastive detection result.
（2）Existing direct measurement formula measuring technique and device in environmentally friendly live contrasting detection experiment, newly into it is micro
Flue gas was mixed with the flue gas of the upper period in filter interior sluggishness space, and mixed flue gas enters Yang Qi sensing chamber,
As a result the instantaneous and real-time concentration that gaseous pollutant cannot be characterized, cannot detect the maximum value of gaseous pollutant；It is right with environmental protection
It is overproof when being compared than the master meter testing result of monitoring, environmental protection tests requirement cannot be met.
（3）The minimum discharge of national requirements environmental protection at present, the accuracy of detection of CEMS want that minimum discharge requirement can be met；It is existing
It directly measures formula gas pollutant measuring technique and the range of device is all larger, the requirement of minimum discharge accuracy of detection cannot be met.
The light that spectrum analysis is emitted is longer in the indoor stroke of detection, then the accuracy of spectrum analysis is higher, increases light and is examining
Minimum discharge testing requirements could be met by surveying indoor stroke, but if directly increasing the length of Yang Qi sensing chamber, long-term high
Under the working environment of temperature, nature creep and sag bent occur for sensing chamber, influence the normal light path of light, the stability of instrument compared with
Difference；Meanwhile directly measurement formula measuring device need to be tested at the scene, the increase of sensing chamber's length can cause the increase of volume,
It is not easy to execute-in-place.
（4）According to《Fossil-fuel power plant atmospheric pollutant emission standard》The concentration of emission of gaseous pollutant need to be according to actual measurement oxygen content
It is converted to benchmark oxygen content concentration, environmental protection administration is examined by the benchmark oxygen content concentration of gaseous pollutant；It directly surveys at present
The measuring point of amount type gaseous pollutant emission monitoring device, the measuring point of oxygen content concentration detection apparatus are arranged in different positions, and
Independent detection, and due to current existing direct measurement formula gaseous pollutant emission monitoring device, measurement of oxygen content device itself
Basic function just do not meet environmental protection tests requirement, cause the content of the gaseous pollutant detected and gaseous pollutant oxygen amount
Value is within the same period, the oxygen-containing concentration of emission of benchmark for the gaseous pollutant that cannot accurately calculate sample gas.
In conclusion although the CEMS for directly measuring formula has many advantages, such as, in terms of above-mentioned basic function
Problem causes to be unable to reach environmental protection tests requirement, therefore, how to solve existing superseded direct measurement formula gaseous contamination
The technical bottleneck of object measuring technique designs the direct measurement formula gas pollutant monitoring device for meeting environmental protection tests requirement
CEMS meets environmental protection equipment operation adjust automatically needs, realizes the perfection of environment monitoring and environmental protection equipment operation automatically controlled
In conjunction with, be of great significance to disposal of pollutants analyte detection, control field, and the detection technique in the field can be brought it is great into
Step.
Invention content
Formula gaseous pollutant emission monitoring device is directly measured the object of the present invention is to provide a kind of, it being capable of gaseous pollutant
Accuracy in detection, and effectively solve the problems, such as that overproof big and sample gas purity existing for traditional directly measurement formula detection device is low, it carries
High measurement accuracy, and simple operation, occupy little space, simultaneously, additionally it is possible to which the accurate gaseous pollutant benchmark for calculating sample gas contains
Oxygen concentration of emission.
The technical solution adopted by the present invention is：
It is a kind of directly to measure formula gaseous pollutant emission monitoring device, including testing agency, interrupter, extraction sector, calibration
Mechanism, blowing mechanism and central processing module；
Testing agency includes sensing chamber, is equipped on the left of sensing chamber and the spectral detection module that be connected to inside sensing chamber, detection interior
Equipped with principal reflection mirror, spectral detection module is oppositely arranged with principal reflection mirror；The spectral detection module includes light source module and light
Spectrum receives analysis module；
Interrupter includes the admission line of communication with detection room right end and the smoke valve in admission line inlet, air inlet pipe is arranged
Road and smoke valve are arranged in flue, and smoke filtration cover is arranged with outside admission line entrance, filter is equipped in admission line；
Extraction sector includes pump-line, extraction valve and aspiration pump, pump-line entrance communication with detection room left part, pump-line
Outlet connection aspiration pump, extraction valve are arranged in pump-line；
Calibrating device includes standard gas pipeline and the standard gas intake valve that is arranged on standard gas pipeline, and the connection of standard gas pipeline air-inlet end is external
Standard air source, standard gas pipeline outlet side are connected to admission line, and standard gas pipeline outlet side is between smoke valve and filter；
Blowing mechanism includes purging pipeline, the purging gentle body flow controller of intake valve, the external mark of purging pipeline inlet end connection
Quasi- air source, scavenging conduit road outlet side are stretched into flue and are connected to inside smoke filtration cover, and purging intake valve is arranged on purging pipeline,
Gas flow controller is arranged on pump-line；
Light source module controlled end connects the light source control end of central processing module, in the communication terminal connection of spectrum acquisition analysis module
The spectrum analysis communication terminal of processing module, gas flow controller communication terminal is entreated to connect central processing module flow communication terminal, in
Processing module pumping control terminal is entreated to connect aspiration pump controlled end.
In order to reduce decaying when light transmission, spectral detection precision is improved, further, the light source module passes through hair
Fiber unit communication with detection room is penetrated, the spectrum acquisition analysis module passes through mirror based fiber optica unit communication with detection room, launching fiber
Unit is arranged between light source module and principal reflection mirror, and mirror based fiber optica unit is arranged in principal reflection mirror and spectrum acquisition analysis module
Between；Launching fiber unit includes diversing lens and transmitting light-conductive optic fibre, and diversing lens and transmitting light-conductive optic fibre are along light source module
Emit and set gradually to the optical path direction of principal reflection mirror, mirror based fiber optica unit includes mirror lens and reflection light optical fiber, reflection
The optical path direction that lens and reflection light optical fiber are reflected towards spectrum acquisition analysis module along principal reflection mirror is set gradually.
Indoor distance is being detected in order to increase light in the case where not lengthening sensing chamber's length, it is further, described
Detection interior is additionally provided with subreflector, and subreflector is located on the left of principal reflection mirror and is oppositely arranged with principal reflection mirror.
In order to consider pressure and temperature effect in spectrum analysis, accuracy of analysis, further, the inspection are improved
Surveying mechanism, to further include setting detecting indoor temperature sensor and pressure sensor, temperature sensor and pressure sensor it is defeated
Outlet is separately connected spectrum acquisition analysis module signal input part.
Further include that setting exists further in order to realize the detection of oxygen concentration in sample gas on same complete equipment
Oxygen detection module on pump-line, oxygen detection module output end connect the detection signal input part of central processing module；
When testing agency is detected the gas pollutant content in high-temperature sample gas, oxygen detection module is to the oxygen content with equally gas
Directly detected, testing agency carry out standard gas calibration when, standard gas simultaneously into oxygen detection module to oxygen detection module into
Rower is fixed.
Further, the admission line is equipped with NOXConverter, NOXConverter is arranged in standard gas pipeline outlet side and mistake
Between filter.
Further, the smoke valve uses check-valves or stock control valve.
Further, the aspiration pump is using air ejector of emanating, and air ejector of emanating is equipped with compressed air inlet, sample gas is taken out
Suction inlet and the outlet of sample gas, compressed air inlet are connected to external air source, and sample gas pump orifice is connected to exhaust tube, sample gas outlet outlet
Pipeline, outlet pipe are connected to inside flue.
Further, the light of the light source module transmitting is ultraviolet light.
Root further, when being demarcated with standard gas, open, and smoke valve is closed, in standard gas and filter mantle by standard gas intake valve
Flue gas isolation, flue gas cannot mix into admission line with standard gas, and standard gas will not leak into flue from admission line.
The invention has the advantages that：
（1）By the way that interrupter is arranged, when sample gas enters sensing chamber by admission line, smoke valve is opened, and is ensureing flue gas circulation just
Often, when carrying out standard gas calibration, sensing chamber's smoke valve is closed, when realizing standard gas calibration, calibrating gas and flue gas it is complete every
From having kept away and exempted from sample gas and be mixed into standard gas to cause calibration inaccurate, ensured the accuracy of calibration result, environmentally friendly scene is made to carry out sample gas
Calibration result is accurate and unique when calibration, and then ensures that the present invention disclosure satisfy that the requirement of environmental protection tests；
（2）The structure for stretching into sample gas filter mantle in flue and by admission line is set by the way that smoke filtration to be provide with, is increased ensureing
While big filtering traffic, prevent resistance from being had an impact to sample throughput, meanwhile, admission line is arranged in smoke filtration cover
It is interior, have compressed filter mantle internal gas sluggishness space；
（3）By the way that blowing mechanism is arranged, detects that the gas flow of pump-line is less than in gas flow controller and limit threshold value
When blowback cleaning is carried out to smoke filtration cover in time, avoiding smoke filtration from covering on, long-time service is lower to be blocked and then influences sample air-flow
Amount further ensures sample gas accuracy of detection, meanwhile, blowing mechanism coordinates the use of smoke valve, gas stream when can avoid purging
Entering sensing chamber makes detection interior gas mixing cause sample gas testing result inaccurate；
（4）By the way that optical link module is arranged between spectral detection module and sensing chamber, not only by spectral detection module and inspection
Survey is isolated between room, avoids detecting indoor high-temperature gas damage spectral detection module, ensures that equipment safety is used and improved
Service life of equipment, while the decaying in light transmission is reduced, ensure the accuracy of Spectroscopic analysis results；
（5）By the way that subreflector is arranged, the light source that light source module is launched is set to pass through between speculum and subreflector multiple
Spectrum acquisition analysis module is entered back into after reflection, under the premise of not increasing sensing chamber's length, increases light in sensing chamber's sample
Light path in gas improves the accuracy of detection of the present invention；
（6）By the way that heat safe oxygen detection module is arranged, make sample gas without processing such as coolings with regard to directly carrying out oxygen-containing measurement
Amount makes the actual oxygen magnitude that the gaseous pollutant content of detection is converted with the oxygen-containing concentration of emission of participation benchmark within the same period,
And can realize that the when of being calibrated to detection for gaseous contaminants apparatus function synchronizes and lambda sensor is calibrated, convenient for more accurately calculating sample
The oxygen-containing concentration of emission of the benchmark of pollutant in gas.
Description of the drawings
Fig. 1 is the structural schematic diagram of embodiment one；
Fig. 2 is the structural schematic diagram of embodiment one in a state of use；
Fig. 3 is the structural schematic diagram of embodiment two；
Fig. 4 is the structural schematic diagram of embodiment two in a state of use；
Fig. 5 is the structural schematic diagram of embodiment three
Fig. 6 is the structural schematic diagram of embodiment three in a state of use；
The structural schematic diagram of Fig. 7 example IVs；
Fig. 8 is the structural schematic diagram of example IV in a state of use.
Reference sign：
1, sensing chamber；2, spectrum acquisition analysis module；3, light source module；4, extraction valve；5, pump-line；6, gas flow controls
Device；7, aspiration pump；8, intake valve is purged；9, pipeline is purged；10, standard gas pipeline；11, standard gas intake valve；12, smoke filtration cover；
13, principal reflection mirror；14, check-valves；15, admission line；16, filter；17, mounting flange；18, walling of flue；19, NOx is converted
Device；20, subreflector；21, temperature sensor；22, pressure sensor；23, launching fiber unit；24, stock control valve；
25, launching fiber unit；26, sealing sleeve pipe；27, outlet pipe；28, oxygen detection module.
Specific implementation mode
The present invention includes testing agency, interrupter, extraction sector, calibrating device, blowing mechanism and central processing module；
Testing agency includes sensing chamber 1, and 1 left side of sensing chamber is equipped with the spectral detection module being connected to inside sensing chamber 1, sensing chamber
Principal reflection mirror 13 is equipped in 1, spectral detection module is oppositely arranged with principal reflection mirror 13；The spectral detection module includes light source die
Block 3 and spectrum acquisition analysis module 2；
Interrupter includes the admission line 15 of 1 right end of communication with detection room, and admission line 15 stretches into walling of flue 18 and is arranged in flue
It is interior, and 15 inlet of admission line is arranged with smoke filtration cover 12, admission line 15 is interior to be equipped with cigarette successively along air current flow direction
Air valve and filter 16, filter 16 use nonplanar convex-concave structure, increased tolerance；The smoke valve uses check-valves 14
Or stock control valve 24；
Extraction sector includes pump-line 5, and 5 entrance communication with detection room of pump-line, 1 left part, the outlet of pump-line 5, which is equipped with, takes out
Air pump 7, pump-line 5 is interior to be equipped with extraction valve 4；
Calibrating device includes standard gas pipeline 10 and the standard gas intake valve 11 that is arranged on standard gas pipeline 10,10 inlet end of standard gas pipeline
Be connected to external perimysium reference air source, 10 outlet side of standard gas pipeline be connected to admission line 15,10 outlet side of standard gas pipeline be located at smoke valve with
Between filter 16；
Blowing mechanism includes purging pipeline 9, purging intake valve 8 and gas flow controller 6, and purging 9 inlet end of pipeline connection is outer
Ministerial standard air source, 9 outlet side of purging pipeline are stretched into flue and are connected to inside smoke filtration cover 12, and the purging setting of intake valve 8 is being blown
It sweeps on pipeline 9, gas flow controller 6 is arranged on pump-line 5；
3 controlled end of light source module connects the light source control end of central processing module, the communication terminal connection of spectrum acquisition analysis module 2
The spectrum analysis communication terminal of central processing module, 6 communication terminal of gas flow controller connect central processing module flow communication terminal,
Central processing module is evacuated control terminal and connects 7 controlled end of aspiration pump.
For a better understanding of the present invention, technical scheme of the present invention is described further below in conjunction with the accompanying drawings.
Embodiment one：
As depicted in figs. 1 and 2, the present embodiment include testing agency, interrupter, extraction sector, calibrating device, blowing mechanism and
Central processing module；
Testing agency includes sensing chamber 1, and 1 right end of sensing chamber stretches into flue and sensing chamber 1 is fixed on cigarette by mounting flange 17
On road wall 18,1 left end of sensing chamber is connected to extraction sector, and 1 right end of sensing chamber is respectively communicated with interrupter and calibrating device.Sensing chamber
1 left side is equipped with the spectral detection module being connected to inside sensing chamber 1, and spectral detection module includes light source module 3 and spectrum acquisition
Analysis module 2, is equipped with principal reflection mirror 13 in sensing chamber 1, principal reflection mirror 13 be located at 1 right end of sensing chamber and with spectral detection module phase
To setting, principal reflection mirror 13 preferably uses three angle mirrors.Wherein, spectrum acquisition analysis module 2 includes for receiving reflection light
Laser pick-off module and analyzer for carrying out spectrum analysis.
Interrupter is arranged in flue and for being filtered to sample gas, interrupter includes 1 right end of communication with detection room
Admission line 15,15 inlet of admission line is arranged with smoke filtration cover 12, and 15 entrance of admission line positioned at right end is set
There are flue gas hair, smoke valve that electrically-controlled valve or the check-valves 14 with one-way flow function, the present embodiment is used preferably to use non-return
The circulating direction of valve 14, check-valves 14 is that is, consistent with sample gas circulating direction, the air inlet being located on the left of check-valves 14 from right to left
Filter 16 is equipped in pipeline 15.
Smoke filtration cover 12 preferably uses radial section for the metal powder sintered filter element of ellipse, oval under same volume
Type column structure has the surface area of bigger, therefore can be effectively increased the filter area of smoke filtration cover 12, makes smoke filtration
The ventilatory capacity of cover 12 can reach 0.8L/min, under the premise of not increasing resistance, can increase in this way smoke filtration cover 12 surface area,
Increase through-current capacity, simultaneously, moreover it is possible to reduce 16 internal gas sluggishness space of filter.
By using smoke filtration cover 12 made of metal powder sintered filter element, and section by smoke filtration cover 12 radially
Face is set as non-circular, do not increase 12 internal volume of smoke filtration cover under the premise of, so that it may increase 12 table of smoke filtration cover
Area, increase sample air-flow flux, ensure newly into a large amount of flue gases the gas in sluggish space all can be cemented out rapidly,
Make gas in sensing chamber 1 it is all newly into flue gas, and then ensure that testing result is capable of the instantaneous of accurate characterization gaseous pollutant
And real-time concentration, so that the present invention is consistent with master meter testing result when carrying out environmentally friendly contrastive detection, meets ring
Protect the requirement of detection；
Extraction sector includes pump-line 5, and 5 entrance communication with detection room of pump-line, 1 left part, the outlet of pump-line 5, which is equipped with, takes out
Air pump 7, pump-line 5 is interior to be equipped with extraction valve 4；
Calibrating device includes standard gas pipeline 10 and the standard gas intake valve 11 that is arranged on standard gas pipeline 10,10 inlet end of standard gas pipeline
It is connected to external perimysium reference air source, 10 outlet side of standard gas pipeline is connected to admission line 15, and 10 outlet side of standard gas pipeline is located at check-valves 14
Between filter 16；
Blowing mechanism includes purging pipeline 9, purging intake valve 8 and gas flow controller 6, and purging 9 inlet end of pipeline connection is outer
Ministerial standard air source, 9 outlet side of purging pipeline are stretched into flue and are connected to inside smoke filtration cover 12, and the purging setting of intake valve 8 is being blown
It sweeps on pipeline 9, gas flow controller 6 is arranged on pump-line 5.
3 controlled end of light source module connects the light source control end of central processing module, the communication terminal of spectrum acquisition analysis module 2
The spectrum analysis communication terminal of central processing module is connected, it is logical that 6 communication terminal of gas flow controller connects central processing module flow
End is interrogated, central processing module is evacuated control terminal and connects 7 controlled end of aspiration pump.
The operation principle of embodiment one is：
When sample gas detects, extraction valve 4 and aspiration pump 7 are opened, and standard gas intake valve 11 and purging intake valve 8 are closed, smoke filtration cover
Negative-pressure sucking is generated in 12, the sample gas in flue enters smoke filtration cover 12, passed through successively after filtering out the solid particulate matter in flue gas
After crossing back valve 14, admission line 15 and filter 16, clean contains gas pollutant SO2、NOXSample gas by sensing chamber 1 into
Enter sensing chamber 1 and carry out spectral detection, is discharged subsequently into pump-line 5, gas flow controller 6, and by aspiration pump 7.
The spectral-analysis process of the present embodiment is：The light that light source module 3 sends out ultraviolet band enters sensing chamber 1, light
Enter spectrum acquisition detection module after the reflection of principal reflection mirror 13, due to the SO in sample gas2、NOXIt can 1 light of absorption detecting room
In characteristic wave bands, spectrum acquisition analysis module 2 to the spectrum of the light after being absorbed by gas pollutant carry out analysis obtain gas
Body pollution object concentration.
Preferably using integrated spectrum acquisition module and spectroanalysis instrument, spectrum acquisition module receives anti-spectral detection module
Irradiating light beam carries out gaseous pollutant analysis by spectrometer.
When standard gas is demarcated, extraction valve 4 and standard gas intake valve 11 are opened, and aspiration pump 7, purging intake valve 8 are closed, in standard gas pressure
Under force effect, standard gas enters standard gas pipeline 10, and since smoke valve uses check-valves 14, check-valves 14 closes under the effect of standard gas pressure
It closes, standard gas will not leak into flue from admission line 15, and flue gas cannot enter admission line 15 since check-valves 14 is closed；
Standard gas enters sensing chamber 1 after filter 16, and spectral detection module carries out spectrum analysis and carries out parameter calibration, and standard gas finally flows
It is discharged through pump-line 5 and gas flow controller 6.Interval of calibration according to《Stationary source flue gas（SO2, NOX, particle
Object）Discharge continuous Specifications of Monitoring Technology》（HJ 75-2017）It is required that setting, primary per interior at least automatic Calibration calibration for 24 hours.
The spectrum analysis and process for carrying out parameter calibration is：The ultraviolet band light that light source module 3 is sent out enters sensing chamber
1, spectral detection module, the SO in calibrating gas are entered after the reflection of principal reflection mirror 132、NOXIn 1 light of absorption detecting room
Characteristic wave bands, spectral detection module analyze the spectrum of the light after being absorbed by gas pollutant, obtain calibrating gas
Pollutant concentration, then the indicating value of adjustment spectrum acquisition analysis module 2, makes 2 indicating value of spectrum acquisition analysis module and standard value one
It causes, completes calibration process.
It is detected in above-mentioned sample gas and in the process, gas flow controller 6 detects the gas flow in pump-line 5 in real time,
When flow value, which is less than, limits threshold value, it was demonstrated that stopping state occurs in smoke filtration cover 12, at this point, extraction valve 4, aspiration pump 7, standard gas
Intake valve 11 is turned off, and purging intake valve 8 is opened, and external compression air source enters via purging pipeline 9 inside smoke filtration cover 12,
And smoke filtration cover 12 is purged from inside to outside, 12 surface dirt of removal smoke filtration cover.The value of flow restriction threshold value need to ensure
Stablized by the flue gas flow of monitoring device, is met simultaneously《Stationary source flue gas（SO2, NOX, particulate matter）The continuous prison of discharge
Examining system technology requires and detection method》（HJ 76-2017）" influence of sample introduction changes in flow rate " technical indicator meet the requirements.
Embodiment two：
As shown in Figure 3 and Figure 4, the difference between this embodiment and the first embodiment lies in：
Temperature sensor 21 and pressure sensor 22 are equipped in sensing chamber 1, sensing chamber 1 is interior to be equipped with principal reflection mirror 13 in right part,
On the admission line 15 that 1 left part of sensing chamber is connected to equipped with subreflector 20 corresponding with principal reflection mirror 13,1 right end of sensing chamber certainly
Right-to-left is equipped with check-valves 14, NOx converters 19 and filter 16 successively, and NOx converters 19 are located at 10 outlet side of standard gas pipeline
Between filter 16.
Principal reflection mirror 13 includes x three angle mirrors being set up in parallel, and subreflector 20 includes the x-1 triangles being set up in parallel
Mirror, three angle mirrors of principal reflection mirror 13 are towards left setting, and three angle mirrors of subreflector 20 are towards right setting, i-th three of subreflector 20
Angle mirror lower half and i-th of three angle mirror first halves of principal reflection mirror 13 are oppositely arranged, i=1,2 ... ..., x-1；Light is in principal reflection
Transmittance process between mirror 13 and subreflector 20 is：The light that light source module 3 is sent out injects the 1st triangle of principal reflection mirror 13
Mirror, light is reflexed to the 1st three angle mirrors of subreflector 20 by the 1st three angle mirrors of principal reflection mirror 13, then by subreflector
20 the 1st three angle mirrors reflex to the 2nd three angle mirrors of principal reflection mirror 13, until xth -1 of the light by subreflector 20
After three angle mirrors 20 reflex to x-th of three angle mirrors of principal reflection mirror 13, light is finally reflected by x-th of three angle mirrors of principal reflection mirror 13
To the spectrum acquisition analysis module 2 in left side.
Light source module 3 passes through mirror based fiber optica by 23 communication with detection room 1 of launching fiber unit, spectrum acquisition analysis module 2
25 communication with detection room 1 of unit, launching fiber unit 23 are arranged between light source module 3 and principal reflection mirror 13, mirror based fiber optica unit
25 are arranged between principal reflection mirror 13 and spectrum acquisition analysis module 2；Launching fiber unit 23 includes that diversing lens and transmitting are led
Light optical fiber, diversing lens and transmitting light-conductive optic fibre, which emit along light source module 3 to the optical path direction of principal reflection mirror 13, to be set gradually, instead
It includes mirror lens and reflection light optical fiber to penetrate fiber unit 25, and mirror lens and reflection light optical fiber are reflected along principal reflection mirror 13
It is set gradually to the optical path direction of spectrum acquisition analysis module 2.
The operation principle of embodiment two is：
When sample gas detects, extraction valve 4 and aspiration pump 7 are opened, and standard gas intake valve 11 and purging intake valve 8 are closed, smoke filtration cover
Negative-pressure sucking is generated in 12, the sample gas in flue enters smoke filtration cover 12, passed through successively after filtering out the solid particulate matter in flue gas
After crossing admission line 15, NOx converters 19 and filter 16, clean contains gas pollutant SO2、NOXSample gas pass through detection
Room 1 enters sensing chamber 1 and carries out spectral detection, is discharged subsequently into pump-line 5 and by aspiration pump 7.
The spectral-analysis process of the present embodiment is：Light source module 3 sends out the light of ultraviolet band, the light warp of ultraviolet band
By sensing chamber 1 and propagated on principal reflection mirror 13 by transmitting light unit, then principal reflection mirror 13 and subreflector 20 it
Between carry out multiple reflections after, the light of final ultraviolet band enters spectrum acquisition detection module via mirror based fiber optica unit 25, by
SO in sample gas2、NOXCharacteristic wave bands in 1 light of meeting absorption detecting room, spectrum acquisition analysis module 2 is to by gas pollutant
The spectrum of light after absorption is analyzed, and the temperature signal and pressure sensor 22 that are detected according to temperature sensor 21 detect
Pressure signal, analyzed via spectroanalysis instrument and obtain gas pollutant concentration.
When standard gas is demarcated, extraction valve 4 and standard gas intake valve 11 are opened, and aspiration pump 7 and purging intake valve 8 are closed, check-valves
14 since non-return acts on, and standard gas can not leak into flue from admission line 15, and flue gas can not enter admission line 15；It is marking
Under air pressure force effect, external standard gas air source successively via after standard gas pipeline 10 and filter 16 enter sensing chamber 1, spectral detection mould
Block carries out spectrum analysis and carries out parameter calibration, and standard gas is discharged after finally flowing through pump-line 5 and gas flow controller 6.
Embodiment three：
As shown in Figure 5 and Figure 6, the difference between this embodiment and the first embodiment lies in：
1 excircle of sensing chamber is arranged with sealing sleeve pipe 26, and 26 outer diameter of sealing sleeve pipe is not less than 12 maximum outside diameter of smoke filtration cover；Inspection
It surveys and is equipped with temperature sensor 21 and pressure sensor 22 in room 1, it is left that temperature sensor 21 and pressure sensor 22 are located at sensing chamber 1
End is respectively used to the temperature and pressure of sample gas in detection sensing chamber 1.
Smoke valve in the present embodiment uses stock control valve 24, stock control valve 24 to include valve body, valve rod and hold
Row device, 15 entrance of admission line extend downwardly, and valve body is arranged in 15 inlet of admission line, and actuator is located at outside walling of flue 18,
Valve body and actuator are rotatablely connected by valve rod, realize actuator long-distance control valve body, the outlet side of aspiration pump 7 passes through outlet
Pipeline 27 is connected to inside flue.
Light source module 3 passes through mirror based fiber optica by 23 communication with detection room 1 of launching fiber unit, spectrum acquisition analysis module 2
25 communication with detection room 1 of unit, launching fiber unit 23 are arranged between light source module 3 and principal reflection mirror 13, mirror based fiber optica unit
25 are arranged between principal reflection mirror 13 and spectrum acquisition analysis module 2；Launching fiber unit 23 includes that diversing lens and transmitting are led
Light optical fiber, diversing lens and transmitting light-conductive optic fibre, which emit along light source module 3 to the optical path direction of principal reflection mirror 13, to be set gradually, instead
It includes mirror lens and reflection light optical fiber to penetrate fiber unit 25, and mirror lens and reflection light optical fiber are reflected along principal reflection mirror 13
It is set gradually to the optical path direction of spectrum acquisition analysis module 2.
The operation principle of embodiment three is：
When sample gas detects, stock control valve 24, extraction valve 4 and aspiration pump 7 are opened, standard gas intake valve 11 and purging intake valve 8
It closes, negative-pressure sucking is generated in smoke filtration cover 12, the sample gas in flue enters smoke filtration cover 12, after filtering out solid particulate matter
Sample gas successively pass through stock control valve 24, admission line 15 and filter 16, then, clean contains gas pollutant
SO2、NOXSample gas by sensing chamber 1 enter sensing chamber 1 carry out spectral detection, subsequently into pump-line 5, gas flow control
Device 6 is simultaneously discharged into flue by the extraction of aspiration pump 7, avoids pollution air.
It is detected in above-mentioned sample gas and in the process, gas flow controller 6 detects the gas flow in pump-line 5 in real time,
When flow value, which is less than, limits threshold value, it was demonstrated that stopping state occurs in smoke filtration cover 12, at this point, by stock control valve 24 and mark
Gas intake valve 11 is closed, and purging intake valve 8 is opened, and external compression air source enters via purging pipeline 9 inside smoke filtration cover 12,
And smoke filtration cover 12 is purged from inside to outside, 12 surface dirt of removal smoke filtration cover.The value of flow restriction threshold value need to ensure
Stablized by the flue gas flow of monitoring device, is met simultaneously《Stationary source flue gas（SO2, NOX, particulate matter）The continuous prison of discharge
Examining system technology requires and detection method》（HJ 76-2017）" influence of sample introduction changes in flow rate " technical indicator meet the requirements.
The spectral-analysis process of the present embodiment is：Light source module 3 sends out the light of ultraviolet band, the light warp of ultraviolet band
It crosses after principal reflection mirror 13 reflects and enters spectrum acquisition detection module, due to the SO in sample gas2、NOXThe feature in inspection light can be absorbed
Wave band, spectrum acquisition analysis module 2 analyze the spectrum of the light after being absorbed by gas pollutant, and according to temperature sensing
The pressure signal that the temperature signal and pressure sensor 22 that device 21 detects detect is analyzed via spectroanalysis instrument and obtains gas dirt
Contaminate object concentration.
When standard gas is demarcated, extraction valve 4, aspiration pump 7 and standard gas intake valve 11 are opened, and stock control valve 24 is closed, flue gas
Valve is that stock control valve 24 is closed, and standard gas can not leak into flue from admission line 15, and flue gas equally cannot
Into admission line 15；Under the swabbing action that aspiration pump 7 generates, external standard gas air source is successively via standard gas pipeline 10 and filtering
Enter sensing chamber 1 after device 16, spectral detection module carries out spectrum analysis and carries out parameter calibration, and standard gas is finally successively by pumping
Pipeline 5, gas flow controller 6 and aspiration pump 7, are finally discharged by aspiration pump 7 in flue.
Example IV：
As shown in Figure 7 and Figure 8, the present embodiment and embodiment three difference lies in：
Smoke valve uses check-valves 14, check-valves 14 to be arranged in the inlet of 15 right end of admission line, air inlet in the present embodiment
And sample pipeline 15 be connected to by check-valves 14 and the inside of smoke filtration cover 12, and the circulating direction of check-valves 14 is from right to left, i.e.,
Gas circulating direction is consistent, is located in the admission line 15 in 14 left side of check-valves and is equipped with filter 16.
Pump-line 5 is equipped with oxygen detection module 28, and oxygen detection module 28 is between extraction valve 4 and aspiration pump 7
And for detecting oxygen concentration in sample gas in real time, the detection signal that 28 output end of oxygen detection module connects central processing module is defeated
Enter end.
Using air ejector of emanating, air ejector of emanating goes out aspiration pump 7 equipped with compressed air inlet, sample gas pump orifice and sample gas
Mouthful, compressed air inlet is connected to external pressure air source, and sample gas pump orifice is connected to exhaust tube, sample gas outlet outlet pipe 27.
The operation principle of example IV is：
When sample gas detects, check-valves 14, extraction valve 4 and aspiration pump 7 are opened, and standard gas intake valve 11 and purging intake valve 8 are closed, cigarette
Negative-pressure sucking is generated in gas filter mantle 12, the sample gas in flue enters smoke filtration cover 12, filters out the solid particulate matter in flue gas
Sample gas afterwards passes through check-valves 14, admission line 15 and filter 16 successively, and then, clean contains gas pollutant SO2、NOX
Sample gas enter sensing chamber 1 carry out spectral detection, then flow sequentially through into pump-line 5, oxygen detection module 28 and gas
Flow controller 6 is finally discharged by aspiration pump 7 in flue, avoids pollution air.
The spectral-analysis process of the present embodiment is：Light source module 3 sends out the light of ultraviolet band, the light warp of ultraviolet band
It crosses after principal reflection mirror 13 reflects and enters spectrum acquisition detection module, due to the SO in sample gas2、NOXIn 1 light of meeting absorption detecting room
Characteristic wave bands, spectrum acquisition analysis module 2 analyzes the spectrum of the light after being absorbed by gas pollutant, and according to temperature
Degree, pressure and oxygen content data, analyze via spectroanalysis instrument and obtain gas pollutant concentration；At the same time, oxygen detection
Module 28 analyzes the oxygen content in the sample gas of high temperature, obtains oxygen concentration.
When standard gas is demarcated, extraction valve 4, aspiration pump 7 and standard gas intake valve 11 are opened, and check-valves 14 and purging intake valve 8 close
It closes, under the one-way flow effect of check-valves 14, standard gas can not leak into flue from admission line 15, and flue gas is not due to bearing
Pressure effect equally cannot be introduced into admission line 15, ensure that the pure of sample gas；External standard gas air source is successively via standard gas pipeline 10
It carries out spectrum analysis into sensing chamber 1, spectral detection module with after filter 16 and simultaneously carries out parameter calibration, then, standard gas enters
Pump-line 5, oxygen detection module 28, gas flow controller 6 and aspiration pump 7, are finally discharged into flue via aspiration pump 7.With
This simultaneously, oxygen detection module 28 carries out oxygen content analysis and calibration.
Finally it should be noted that：The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
Present invention has been described in detail with reference to the aforementioned embodiments, it will be understood by those of ordinary skill in the art that, still may be used
To modify to the technical solution recorded in previous embodiment, either which part or all technical features are equal
It replaces, and these modifications or replacements, the model for technical solution of the embodiment of the present invention that it does not separate the essence of the corresponding technical solution
It encloses.
Claims (10)
1. a kind of directly measuring formula gaseous pollutant emission monitoring device, it is characterised in that：Including testing agency, interrupter,
Extraction sector, calibrating device, blowing mechanism and central processing module；
Testing agency includes sensing chamber, is equipped on the left of sensing chamber and the spectral detection module that be connected to inside sensing chamber, detection interior
Equipped with principal reflection mirror, spectral detection module is oppositely arranged with principal reflection mirror；The spectral detection module includes light source module and light
Spectrum receives analysis module；
Interrupter includes the admission line of communication with detection room right end and the smoke valve in admission line inlet, air inlet pipe is arranged
Road and smoke valve are arranged in flue, and smoke filtration cover is arranged with outside admission line entrance, filter is equipped in admission line；
Extraction sector includes pump-line, extraction valve and aspiration pump, pump-line entrance communication with detection room left part, pump-line
Outlet connection aspiration pump, extraction valve are arranged in pump-line；
Calibrating device includes standard gas pipeline and the standard gas intake valve that is arranged on standard gas pipeline, and the connection of standard gas pipeline air-inlet end is external
Standard air source, standard gas pipeline outlet side are connected to admission line, and standard gas pipeline outlet side is between smoke valve and filter；
Blowing mechanism includes purging pipeline, the purging gentle body flow controller of intake valve, the external mark of purging pipeline inlet end connection
Quasi- air source, scavenging conduit road outlet side are stretched into flue and are connected to inside smoke filtration cover, and purging intake valve is arranged on purging pipeline,
Gas flow controller is arranged on pump-line；
Light source module controlled end connects the light source control end of central processing module, in the communication terminal connection of spectrum acquisition analysis module
The spectrum analysis communication terminal of processing module, gas flow controller communication terminal is entreated to connect central processing module flow communication terminal, in
Processing module pumping control terminal is entreated to connect aspiration pump controlled end.
2. direct measurement formula gaseous pollutant emission monitoring device according to claim 1, it is characterised in that：The light source
Module passes through mirror based fiber optica unit communication with detection by launching fiber unit communication with detection room, the spectrum acquisition analysis module
Room, launching fiber unit are arranged between light source module and principal reflection mirror, and mirror based fiber optica unit is arranged in principal reflection mirror and spectrum
Between reception analysis module；Launching fiber unit includes diversing lens and transmitting light-conductive optic fibre, the guide-lighting light of diversing lens and transmitting
Fibre, which emits along light source module to the optical path direction of principal reflection mirror, to be set gradually, and mirror based fiber optica unit includes that mirror lens and reflection are led
The optical path direction that light optical fiber, mirror lens and reflection light optical fiber are reflected towards spectrum acquisition analysis module along principal reflection mirror is set successively
It sets.
3. direct measurement formula gaseous pollutant emission monitoring device according to claim 2, it is characterised in that：The detection
Interior is additionally provided with subreflector, and subreflector is located on the left of principal reflection mirror and is oppositely arranged with principal reflection mirror.
4. direct measurement formula gaseous pollutant emission monitoring device according to claim 1 or 2, it is characterised in that：It is described
Testing agency further includes that setting is detecting indoor temperature sensor and pressure sensor, temperature sensor and pressure sensor
Output end is separately connected spectrum acquisition analysis module signal input part.
5. direct measurement formula gaseous pollutant emission monitoring device according to claim 1 or 2, it is characterised in that：Also wrap
The oxygen detection module being arranged on pump-line is included, oxygen detection module output end connects the detection signal of central processing module
Input terminal；When testing agency is detected the gas pollutant content in high-temperature sample gas, oxygen detection module is to the same as equally gas
Oxygen content directly detected, testing agency carry out standard gas calibration when, standard gas simultaneously into oxygen detection module to oxygen examine
Module is surveyed to be demarcated.
6. direct measurement formula gaseous pollutant emission monitoring device according to claim 1 or 2, it is characterised in that：It is described
Admission line is equipped with NOXConverter, NOXConverter is arranged between standard gas pipeline outlet side and filter.
7. direct measurement formula gaseous pollutant emission monitoring device according to claim 1 or 2, it is characterised in that：It is described
Smoke valve uses check-valves or stock control valve.
8. direct measurement formula gaseous pollutant emission monitoring device according to claim 1 or 2, it is characterised in that：It is described
For aspiration pump using air ejector of emanating, it is empty that air ejector of emanating is equipped with compressed air inlet, sample gas pump orifice and the outlet of sample gas, compression
Gas entrance is connected to external air source, and sample gas pump orifice is connected to exhaust tube, sample gas outlet outlet pipe, and outlet pipe is connected to flue
It is internal.
9. direct measurement formula gaseous pollutant emission monitoring device according to claim 1 or 2, it is characterised in that：It is described
The light of light source module transmitting is ultraviolet light.
10. a kind of directly measurement formula gaseous pollutant emission monitoring device according to claim 1 or claim 2, it is characterised in that：With
When standard gas is demarcated, standard gas intake valve is opened, and smoke valve is closed, and standard gas is isolated with the flue gas in filter mantle, and flue gas cannot be into
Enter admission line to mix with standard gas, standard gas will not leak into flue from admission line.
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| CN201811100684.7A CN108801964A (en) | 2018-09-20 | 2018-09-20 | It is a kind of directly to measure formula gaseous pollutant emission monitoring device |
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| CN109668772A (en) * | 2019-01-30 | 2019-04-23 | 杭州喜倍科技有限公司 | A kind of flue gas analyzer |
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| CN113607887A (en) * | 2021-07-30 | 2021-11-05 | 浙江环境监测工程有限公司 | Gaseous pollutant detecting system equipment |
| CN113686787A (en) * | 2021-08-13 | 2021-11-23 | 力合科技（湖南）股份有限公司 | Filtering pool packaging structure and packaging process |
| CN114324191A (en) * | 2022-01-07 | 2022-04-12 | 柳州职业技术学院 | Smell survey system based on intelligent control |
| CN114814118A (en) * | 2022-05-30 | 2022-07-29 | 中川建投集团有限公司 | Monitoring system for environmental quality in building body |
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