CN106353263A - Gas ingredient detection device - Google Patents
Gas ingredient detection device Download PDFInfo
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- CN106353263A CN106353263A CN201610550431.4A CN201610550431A CN106353263A CN 106353263 A CN106353263 A CN 106353263A CN 201610550431 A CN201610550431 A CN 201610550431A CN 106353263 A CN106353263 A CN 106353263A
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- 238000001514 detection method Methods 0.000 title claims abstract description 134
- 239000004615 ingredient Substances 0.000 title abstract 2
- 238000005259 measurement Methods 0.000 claims abstract description 47
- 230000003287 optical effect Effects 0.000 claims abstract description 32
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 claims description 58
- 230000003993 interaction Effects 0.000 claims description 9
- 229910052724 xenon Inorganic materials 0.000 claims description 5
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 claims description 5
- 230000001678 irradiating effect Effects 0.000 abstract description 3
- 238000000149 argon plasma sintering Methods 0.000 abstract description 2
- 230000031700 light absorption Effects 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 56
- 230000008859 change Effects 0.000 description 10
- 238000010926 purge Methods 0.000 description 8
- 230000008033 biological extinction Effects 0.000 description 6
- 230000009471 action Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 230000008676 import Effects 0.000 description 4
- 238000007689 inspection Methods 0.000 description 4
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- PDWBGRKARJFJGI-UHFFFAOYSA-N 2-phenylcyclohexa-2,4-dien-1-one Chemical compound O=C1CC=CC=C1C1=CC=CC=C1 PDWBGRKARJFJGI-UHFFFAOYSA-N 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 206010022000 influenza Diseases 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- DOTMOQHOJINYBL-UHFFFAOYSA-N molecular nitrogen;molecular oxygen Chemical compound N#N.O=O DOTMOQHOJINYBL-UHFFFAOYSA-N 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- XTQHKBHJIVJGKJ-UHFFFAOYSA-N sulfur monoxide Chemical compound S=O XTQHKBHJIVJGKJ-UHFFFAOYSA-N 0.000 description 1
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
-
- 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
-
- 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
- G01N2021/3129—Determining multicomponents by multiwavelength light
Landscapes
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The invention provides a gas ingredient detection device, which is capable of detecting the components of the gas in a short time according to the light absorption measurement component. The gas composition detection device (100), (200), (300) comprises a light source (a), a detection part (5) and a signal output part (95). A light source (3) irradiating a measuring light (Lm) to a pipeline (50) for irradiating at least a wavelength range interacting with the detected object component. Detection unit (5) optical detection (Ld), the light detection (Ld) is a measure of light (Lm) by light scattering (P) and / or the inner wall of the pipe (50) (51 ') scattering and / or reflected light. The signal output unit (95) according to the detection unit (5) detects the light detected (Ld) to determine the intensity of output signal, the judgment signal used to determine the flow through the pipe (50) within the gas (SG) containing object detection component.
Description
Technical field
The present invention relates to there being the gas componant detection means of the composition of no standard in detected gas.
Background technology
In recent years, remove the system of the harmful substances such as the hydrargyrum containing in the aerofluxuss of burning facility etc. for public institute
Know.For example, the concentration of the hydrargyrum containing in the aerofluxuss of flue is flow through in detection, when the concentration of the hydrargyrum detecting exceedes normal concentration
When, the system putting into the activated carbon for removing hydrargyrum in flue is well known.
In the system, in order to detect the hydrargyrum in aerofluxuss, such as using the hydrargyrum analysis dress disclosed in patent documentation 1
Put, described hydrargyrum analytical equipment, according to the extinction amount of the hydrargyrum in aerofluxuss, detects the concentration of hydrargyrum.
Prior art literature
Patent documentation 1: Japanese Laid-Open Patent Publication 2014-126511
But, in conventional hydrargyrum analytical equipment, due to detecting hydrargyrum by exhaust gas sampling to extinction unit etc.
Concentration, so need to spend more time to judging to have or not hydrargyrum.As a result, applying conventional water in described system
In the case of silver analysis device, put into activated carbon from producing containing being vented to of hydrargyrum, existence time is delayed.Therefore, in order to hinder
Only the aerofluxuss containing hydrargyrum are discharged from flue, additionally need the structure making up described time lag.That is, the composition of system becomes multiple
Miscellaneous.Therefore, it is intended that the device of hydrargyrum can be detected in the system in the short time.
Content of the invention
It is an object of the invention to provide the gas componant detection means of the composition in gas can be detected in the short time,
Described gas componant detection means can be according to the extinction amount of described composition, the composition containing in detected gas.
Hereinafter, the multiple embodiments as means for solving the problem are described.Can combination in any institute as needed
The multiple embodiments stated.
The present invention provides a kind of gas componant detection means, and it is used for detecting the presence of detection object composition, and described detection is right
As composition is the detection object composition containing in the gas flowing through in pipeline, described gas componant detection means includes: light source, to
Measurement light is irradiated, described measurement light includes at least the wave-length coverage with described detection object interaction between component in described pipeline；
Test section, detects detection light, and described detection light is by the inwall of described pipeline and/or be present in described pipeline in described measurement light
Interior optical scatter scattering and/or the light reflecting；And signal output portion, according to the inspection being detected by described test section
The intensity of light-metering, output judges signal, described judge signal for judge flow through in described pipeline gas in whether contain
State detection object composition.
Thus it is not necessary to the gas of flowing through pipe is sampled it becomes possible to detect the inspection in this gas at short notice
Survey object component.As a result, can export at short notice for judging to have or not the signal of detection object composition in gas.
Test section can also have the first test section, and described first test section detection interacts into light splitting, described mutual
The action component just light with the wave-length coverage of detection object interaction between component in detection light.Now, signal output portion will
The signal comprising the information relevant with the intensity interacting into light splitting is as judging signal output.
Thereby, it is possible to being used for judging whether make containing the signal required for detection object composition in the gas flow through pipeline
For judging signal output.
Can also work as interact into light splitting intensity measure over time become the first value above when, be judged as flow
Detection object composition is contained in gas in piping.
Thereby, it is possible to only detection object composition be determined whether at short notice according to a kind of signal.
Test section can also have the second test section, described second test section detection bias light, and described bias light is detection
The light of the wave-length coverage of presence impact of the not object under inspection composition in light.Now, signal output portion will also comprise and background
The signal of the relevant information of the intensity of light is as judging signal output.
The shadow causing thereby, it is possible to the presence measuring impact beyond detection object composition and detection object composition simultaneously
Ring, and these information are included in judge in signal.
Can also work as when interacting into the difference of the intensity of light splitting and the intensity of bias light and becoming more than second value, sentence
Break and contain detection object composition in the gas in pipeline for flowing through.
The signal of the impact thereby, it is possible to be caused according to the presence only comprising detection object composition, accurately detects
Detection object composition.
Described gas componant detection means also can also include light collecting part, and focus is arranged in pipeline described light collecting part
On wall.Now, signal output portion according in detection light, by pipeline inwall reflection and/or scattering composition intensity, output
The signal of the concentration of detection object composition can be calculated.
Thus, even if when the gas flowing through pipeline is practically free of optical scatter it is also possible to detection light is detected.Separately
Outward, measurement optical path length in pipeline for the light can uniquely be determined.As a result, detection object composition can not only be detected the presence of
And its concentration can be measured.
Light source can select from xenon lamp, led or laser diode.Thereby, it is possible to produce the light of appropriate wavelength range.
The present invention can detect in the short time and to contain in gas according to the extinction amount of the measurement light of detection object composition
Detection object composition.
Brief description
Fig. 1 is the figure of the structure of gas componant detection means representing first embodiment.
Fig. 2 is the figure of the luminescent spectrum representing xenon lamp.
Fig. 3 is the figure of the composition representing control unit.
Fig. 4 is the figure representing the state being arranged on focus on inwall.
Fig. 5 is the figure representing the method having or not hydrargyrum according to the diversity judgement of the first intensity and the second intensity.
Fig. 6 is the figure of the structure of the gas analyzing apparatus representing second embodiment.
Fig. 7 is to represent the figure only determining whether the method for hydrargyrum according to the first intensity.
Fig. 8 is the figure of the structure of gas componant detection means representing the 3rd embodiment.
Description of reference numerals
100th, 200,300 gas componant detection means
1 casing
1a flange part
3 light sources
31 optical path change parts
5 test sections
5a first test section
5b second test section
7 light collecting parts
9 control units
91 light source control portions
93 optically focused control units
95 signal output portions
97 judging parts
10 purge gas introduction parts
50 flues
51 side walls
51 ' inwalls
O1, o2 peristome
51a flange part
Bp1 first band filter
Bp2 second band filter
Bs beam splitter
Ow optical window
A optical path axis
F focus
P optical scatter
Sg aerofluxuss
gpPurge gas
lmMeasurement light
ldDetection light
ld1Interact into light splitting
id1First intensity
ld2Bias light
id2Second intensity
sb、sdMeasure over time
Th1 first is worth
Th2 second value
θ1First angle
θ2Second angle
W1 distance
The width of w2 flue
Specific embodiment
(1) first embodiment
(1-1) structure of gas componant detection means
Structure with reference to the gas componant detection means 100 to present embodiment for the Fig. 1 illustrates.Fig. 1 is to represent first
The figure of the structure of gas componant detection means of embodiment.The gas componant detection means 100 of present embodiment is used for detecting
Flow through hydrargyrum in the aerofluxuss sg of flue 50 (example of pipeline) of incinerator or chemical device etc. (detection object composition
One example).
Gas componant detection means 100 possesses casing 1.Casing 1 forms the main body of gas componant detection means 100.In addition,
It is formed with flange part 1a in the peristome o1 of casing 1.Flange part 1a is convex with the peristome o2's of the side wall 51 being formed at flue 50
Edge 51a connects.Thus, casing 1 is fixed on side wall 51 in the state of the inner space s of casing 1 is connected with flue 50.
Gas componant detection means 100 possesses light source 3.Light source 3 produces measurement light lm, described measurement light lmIncluding at least with
The wave-length coverage that hydrargyrum interacts.In the present embodiment, light source 3 configures in the inner space s of casing 1 and is located at light path
The underface of change parts 31.Thus, the measurement light l producing from light source 3mBy quilt after the reflective surface of optical path change part 31
Import in flue 50.
In this case, for example, it is also possible to the reflecting surface of optical path change part 31 is set to concave surface or convex surface, to from light
The measurement light l that source 3 producesmDissipated or optically focused after be conducted in flue 50.For example, to the gas flowing through in flue 50
The optical scatter p such as dust comprising in body irradiates measurement light lmIn the case of, measurement light l can be mademIt is conducted into after dissipating.
On the other hand, irradiating measurement light l to the inwall 51 ' (describing below) of flue 50mIn the case of, can be by measurement light lmOptically focused
After be conducted into.
In the present embodiment, light source 3 is xenon lamp.As shown in Fig. 2 xenon lamp can produce 190nm～600nm wave-length coverage
Wide light.Fig. 2 is the figure of the luminescent spectrum representing xenon lamp.As a result, as hereinafter described, by multiple test sections (below
Description) each sensitive surface configure suitable band filter, multiple wave-length coverages can be detected using a light source simultaneously
Light.
In addition it is also possible to using finsen lamp, the led of the light that can produce ultraviolet range or laser diode (ld) etc.
As light source 3.
Gas componant detection means 100 possesses test section 5.Test section 5 detects detection light ld(describing below).In this enforcement
In mode, test section 5 has the first test section 5a and the second test section 5b, described first test section 5a detection interaction composition
Light ld1, described interact into light splitting ld1It is detection light ldThe middle wave-length coverage by hydrargyrum absorption (example of interaction)
The light of (254nm is nearby (Fig. 2)), described second test section 5b detection bias light ld2, described bias light ld2It is not mutual with hydrargyrum
The light of the wave-length coverage (for example, near 470nm (Fig. 2)) of effect.
First test section 5a is photodiode or the photomultiplier tube of the light that can detect ultraviolet range.First inspection
Survey portion 5a configures in measurement light l in the inner space s of casing 1mImport flue 50 in optical path axis a (Fig. 1) on, compare light path
Change parts 31 is further from the position of flue 50.In order that the first test section 5a only detection can interact into light splitting ld1,
The sensitive surface of the first test section 5a is configured with to pass through and interacts into light splitting ld1The first band filter bp1.
Thus, the first test section 5a for example can by ± the 5nm using the wavelength that absorbed by hydrargyrum as center (for example,
254nm ± 5nm) light of wave-length coverage is detected as interacting into light splitting ld1.
On the other hand, the second test section 5b is to detect bias light ld2Photodiode or photomultiplier tube.The
Two test section 5b configure in the position that can detect the light being separated by beam splitter bs in the inner space s of casing 1, described beam splitting
Device bs configures between the first test section 5a and optical path change part 31.In order that the second test section 5b can only detect bias light
ld2, it is configured with the sensitive surface of the second test section 5b and can only pass through bias light ld2The second band filter bp2.
Thus, the second test section 5b for example by using not with hydrargyrum interact wavelength as center ± 5nm (for example,
470nm ± 5nm) the light of wave-length coverage be detected as bias light ld2.
Because test section 5 has the first test section 5a and the second test section 5b, it is possible to detection interacts into simultaneously
Light splitting ld1With bias light ld2.
Gas componant detection means 100 possesses light collecting part 7.Light collecting part 7 is to be arranged on focus f using refraction or reflection
The part of the position of the regulation in flue 50.Light collecting part 7 e.g. can be moved by drive mechanism (not shown) on optical path axis a
Dynamic lens or the aggregation of lens.Alternatively, it is also possible to be made up of light collecting part 7 concave mirror.Can also by compound lens and
Concave mirror is constituting light collecting part 7.Light collecting part 7 configure in the inner space s of casing 1 than test section 5 closer to flue 50 and
Than optical path change part 31 further from flue 50 side.Thus, focus f can be arranged on the rule in flue 50 by light collecting part 7
Positioning is put.
As described above, by configuring light source 3, test section 5 and light collecting part 7 in a casing 1, can suppress due to temperature
Spend variation etc. and lead to the configuration relation of light source 3, test section 5 and light collecting part 7 to deviate.As a result, it can be avoided that in test section 5
Detection light l can not be detectedd.
Additionally, as shown in figure 1, in the present embodiment, casing 1 is with the side of the flow direction of the aerofluxuss sg in flue 50
Formula is fixed on side wall 51.It is however not limited to this it is also possible to by with respect to aerofluxuss sg flow direction tilt in the way of static housing 1.
Gas componant detection means 100 possesses control unit 9.Control unit 9 controls each composition of gas componant detection means 100
Part.Whether control unit 9 exports for judging in aerofluxuss sg containing the signal required for detection object composition.Below will be to control
The details in portion 9 are described in detail.
Gas componant detection means 100 can also possess optical window ow, and described optical window ow is measurement light lmAnd detection
Light ldThe part that can pass through.Configure optical window ow in the way of blocking the peristome o1 of casing 1.Thereby, it is possible to avoid light source
3rd, test section 5, light collecting part 7 etc. are polluted by aerofluxuss sg.
Gas componant detection means 100 can also possess purge gas introduction part 10, described purge gas introduction part 10 to
Optical window ow in flue 50 is provided about purge gas gp.Thereby, it is possible to suppress optical window ow, optical scatter p etc. to lead
The pollution causing.
(1-2) composition of control unit
Then, the composition of control unit 9 is described with reference to Fig. 3.Fig. 3 is the figure of the composition representing control unit.Control unit 9 is that possess
The computer system of cpu, storage device (ram, rom etc.) and the various interfaces such as a/d transducer, d/a transducer.Can be by
This computer system realizes some or all of each function in control explained below portion 9 by the program being capable of action.
Described program can store in the storage device.The part of each function for control unit 9 or complete can also be realized by customization ic
Portion.
Control unit 9 has light source control portion 91.Light source control portion 91, according to from outside light source control instruction, controls light
The action in source 3 starts and stops, measuring light lmIntensity.
Control unit 9 has optically focused control unit 93.Optically focused control unit 93, according to from outside optically focused control instruction, makes optically focused
The lens in portion 7 and/or concave mirror move on optical path axis a.
Control unit 9 has signal output portion 95.Signal output portion 95 output can interpolate that in aerofluxuss sg whether contain hydrargyrum
Judgement signal.Specifically, signal output portion 95 is by based on detection light l being detected by test section 5dIntensity the signal of telecommunication
(magnitude of voltage or current value) is converted to expression detection light ldThe numeric data of intensity etc., and using this numeric data as judgement
Signal is to outside output.
Signal output portion 95 can also be according to detection light ldIntensity, generate and export the hydrargyrum that can calculate in aerofluxuss sg
Concentration signal.Thus, can not only detect in aerofluxuss sg and have or not hydrargyrum and hydrargyrum concentration can be measured.
Because control unit 9 has described composition, so gas componant detection means 100 can interpolate that to outside output
Have or not the signal of hydrargyrum.
Additionally, control unit 9 can also have judging part 97.Judging part 97 is believed according to the judgement from signal output portion 95
Number, judge whether contain hydrargyrum in aerofluxuss sg, and will determine that result exports to outside as detection signal.With regard to having or not hydrargyrum
Specific determination methods, will illustrate in detail below.
Additionally, in this embodiment, judging part 97 configures in control unit 9, but judging part 97 can also be arranged on
In the system of the outside of control unit 9, control unit 9 will determine that the system output to this outside for the signal.
(1-3) action of gas componant detection means
Then, the action to the gas componant detection means 100 of present embodiment illustrates.Start detect hydrargyrum it
Before, first, light collecting part 7 is controlled by optically focused control unit 93, focus f is arranged in flue 50 desired by position.For example, when
When the concentration of the optical scatter p in aerofluxuss sg is high, the side at the moment that the position of focus f is set in flue 50 (is provided with case
The side of body 1), when the concentration of optical scatter p is low, the position of focus f is set in the inboard of flue 50.
Additionally, when there's almost no optical scatter p in aerofluxuss sg, as shown in figure 4, focus f is arranged on side wall 51
Flue 50 side surface (referred to as inwall 51 ').Fig. 4 is the figure representing the state being arranged on focus on inwall.Thus, even if
Make measurement light l not existingmIt is also possible to being reflected by inwall 51 ' and having passed through flue in the case of the optical scatter p of scattering
50 measurement light lmIt is detected as detection light ld.
In addition, the measurement light l being reflected by inwall 51 ' can uniquely be determinedmOptical path length.Therefore, by will be interior
The measurement light l that wall 51 ' reflectsmIt is detected as detection light ldIt is also possible to according to this detection light ldIntensity, simultaneously measurement aerofluxuss sg in
Hydrargyrum concentration.
In the case of importing purge gas gp near not to optical window ow, the measurement light l that reflected by inwall 51 'm's
Optical path length be the part that connects from flange part 1a and flange part 51a to flange part 1a, the coupling part opposite side of 51a
2 times (2w1) apart from w1 (Fig. 4) of inwall 51 '.
On the other hand, purge gas g are being imported near optical window owpIn the case of, the measurement light that reflected by inwall 51 '
lmOptical path length be flue 50 width w2 (Fig. 4) 2 times (2w2).This be due to import purge gas gp in the case of,
There's almost no aerofluxuss sg in the space segment of flange part 51a.
Then, light source control portion 91 controls light source 3, thus irradiates measurement light l into flue 50m.It is imported in flue 50
Measurement light lmDuring by flue 50, a part is absorbed by the hydrargyrum in aerofluxuss sg.In addition, measurement light lmBy aerofluxuss sg
In the optical scatter p that contains and/or inwall 51 ' scattering and/or reflect.As a result, measurement light lmTraveling in flue 50
Direction changes, and a part returns casing 1.Test section 5 will in by flue 50 during not by hydrargyrum absorb and return case
The measurement light l of body 1mIt is detected as detection light ld.Detection light ldMainly comprise by after light collecting part 7 optically focused, 50 from focus f to flue
The measurement light l that peristome o2 returns to casing 1m.
If detection light l is detected by test section 5d, then signal output portion 95 generate the judgement for determining whether hydrargyrum
Signal simultaneously exports to outside.In the present embodiment, generate and comprise and interact into light splitting ld1The first intensity id1Relevant
Information and with bias light ld2The second intensity id2The signal of relevant information is as judging signal.
Next, it is determined that the system of portion 97 or outside, according to the judgement signal inputting from signal output portion 95, judges aerofluxuss
Whether hydrargyrum is contained in sg.In the present embodiment, hydrargyrum is determined whether according to the information only wrapping mercuric impact.For example,
As shown in figure 5, when the second intensity id2With the first intensity id1Difference id2- id1When becoming more than second value th2, it is judged as aerofluxuss
Hydrargyrum is contained in sg.Fig. 5 is the figure representing the method having or not hydrargyrum according to the diversity judgement of the first intensity and the second intensity.
In addition it is also possible to use this two intensity ratio (for example, id1/id2) as the second intensity id2With the first intensity id1
Difference.Preferably, according to the second intensity id2With the first intensity id1The definition of difference etc., described second value th2 is set
For suitable value.
On the other hand, in the measurement light l that will be reflected and/or scatter by inwall 51 'mIt is detected as detection light ldAnd measure hydrargyrum
Concentration in the case of, signal output portion 95 is for example by the first intensity id1With the second intensity id2Ratio (id1/id2) as can count
Calculate the signal of the concentration of hydrargyrum, to outside output.Thus, the system of control unit 9 or outside is by using langbobier law,
Optical path length is set to 2w1 or 2w2, and the signal by the concentration that can calculate described hydrargyrum inputting from signal output portion 95
It is set to the extinction amount of hydrargyrum, thus, it is possible to calculate the concentration of hydrargyrum.
As described above, being changed direct of travel by not absorbed by hydrargyrum and having returned to the measurement light l of casing 1mDetection
For detection light ld.Thus, aerofluxuss sg need not be sampled it becomes possible to pass through to measure light l in aerofluxuss sgmOptical path axis a when
Carve, output immediately represents judgement signal and/or the detection signal having or not hydrargyrum.
By according to the second intensity id2With the first intensity id1Diversity judgement have or not hydrargyrum, thus according to only comprising to have or not
The information of the impact of hydrargyrum is it becomes possible to accurately determine whether hydrargyrum.
(2) second embodiment
In described first embodiment, test section 5 possesses the first test section 5a and the second test section 5b.But, do not limit
In this, as shown in fig. 6, in the gas componant detection means 200 of second embodiment, test section 5 only has the first test section
5a.Fig. 6 is the figure of the structure of the gas analyzing apparatus representing second embodiment.
In this case, signal output portion 95 generates and exports and only comprises and interact into light splitting ld1The first intensity
id1The judgement signal of relevant information.
In this second embodiment, judge the first intensity id1Measure s over timedIt is because the presence of hydrargyrum causes
Or caused by other impacts, thus determine whether hydrargyrum.
For example, as shown in fig. 7, working as the first intensity id1Measure s over timed(δid1/ δ t) become the first value th1
When above, it is judged as containing hydrargyrum in aerofluxuss sg.Fig. 7 is to represent the figure only determining whether the method for hydrargyrum according to the first intensity.
In which case it is preferable that, the value making the first value th1 is than bias light ld2The second intensity id2Measure s over timeb(δ
id2/ δ t) maximum big.
In addition it is also possible to measure s over timedThe state being in more than the first value th1 continues more than the stipulated time
In the case of, it is judged as containing hydrargyrum in aerofluxuss sg.
So, according only to the first intensity id1Relevant information is it becomes possible to judge at short notice to have or not in exhaust sg
Hydrargyrum.
(3) the 3rd embodiments
In described first embodiment and second embodiment, import measurement light l perpendicular to the flow direction of aerofluxuss sgm,
The measurement light l that side in the flow direction perpendicular to aerofluxuss sg is returned up by test section 5mIt is detected as detection light ld.
It is however not limited to this, in the gas componant detection means 300 of the 3rd embodiment, as shown in figure 8, with relatively
In the direction of the flow direction perpendicular to aerofluxuss sg, there is first angle θ1Angle mode import measurement light lm.Test section 5 will be with phase
Direction for the flow direction perpendicular to aerofluxuss sg has second angle θ2Angle the measurement light l that returns of modemIt is detected as detecting
Light ld.Fig. 8 is the figure of the structure of gas componant detection means representing the 3rd embodiment.
In this case, in order to by strong detection light l of test section 5 detection intensitydIt is preferred that first angle θ1With second
Angle, θ2Equal.First angle θ can also be adjusted respectively1With second angle θ2.
Due to light l will be measuredmImporting angle and detection light ldDetection angles from vertical with respect to flowing to of aerofluxuss sg
Angle moves, it is possible to simulate etc. by light scattering simply determining measurement light lmOptical path length in flue 50
Degree.As a result, the detection of hydrargyrum and the measurement of concentration can be executed simultaneously.
In addition, light l will measuredmImporting angle and detection light ldDetection angles from the flow direction with respect to aerofluxuss sg hang down
In the case that straight angle moves, light source 3 and test section 5 (and light collecting part 7) can be loaded in single casing, and point
It is not independently mounted on side wall 51.
(4) other embodiment
It is explained above multiple embodiments of the present invention, but the present invention is not limited to described embodiment, do not taking off
Various modifications can be carried out in the range of the invention thought of the present invention.Particularly can combination in any this specification as needed
Described multiple embodiments and variation.
The other embodiment of (a) detection object composition
In described first embodiment～the 3rd embodiment, using hydrargyrum as detection object composition, but by suitable
Local change becomes light splitting l by the interaction that test section 5 detectsd1And/or bias light ld2Wave-length coverage it is also possible to by nitrogen oxygen
Other composition such as compound (nox), oxysulfide (sox), water and carbon monoxide (co) is as detection object composition.
B () is about the other embodiment of light source control
In described first embodiment～the 3rd embodiment, light source 3 creates time-independent wave-length coverage
Measurement light lm.It is however not limited to this, especially being made up of in the case of light source 3 laser such as ld, by making to being used as light source
The current/voltage of 3 ld input changes over, and can make measurement light lmWave-length coverage change over.In this case,
Do not need first band bandpass filter bp1 and/or the second band filter bp2.
Make measurement light l using ld etc.mWave-length coverage change in the case of, can will interact into light splitting
ld1And bias light ld2Be respectively formed as example using with the wavelength of measurement object interaction between component as center ± 0.5nm
The light of wave-length coverage and using not with the wavelength of measurement object interaction between component as the ± 0.5nm at center wavelength model
The light enclosing.
Industrial applicibility
The present invention can be widely used in the gas componant of the detection carrying out the composition containing in gas based on extinction amount
Detection means.
Claims (8)
1. a kind of gas componant detection means, it is used for detecting the presence of detection object composition, and described detection object composition is to flow through
The detection object composition containing in gas in pipeline, described gas componant detection means is characterised by,
Described gas componant detection means includes:
Light source, irradiates measurement light into described pipeline, and described measurement light includes at least and described detection object interaction between component
Wave-length coverage；
Test section, detects detection light, and described detection light is by the inwall of described pipeline and/or be present in described in described measurement light
Optical scatter scattering in pipeline and/or the light reflecting；And
Signal output portion, according to the intensity of the detection light being detected by described test section, output judges signal, described judgement signal
For judging to flow through in the gas in described pipeline whether contain described detection object composition.
2. gas componant detection means according to claim 1 it is characterised in that
Described test section has the first test section, and described first test section detection interacts into light splitting, described interacts into
Light splitting is in described detection light and the light of the wave-length coverage of described detection object interaction between component,
The signal comprising the information relevant with the described intensity interacting into light splitting is sentenced by described signal output portion as described
Break signal exports.
3. gas componant detection means according to claim 2 it is characterised in that
When the described intensity interacting into light splitting measure over time become the first value above when, be judged as flowing through described
Described detection object composition is contained in gas in pipeline.
4. gas componant detection means according to claim 2 it is characterised in that
Described test section also has the second test section, described second test section detection bias light, and described bias light is described detection
The light of wave-length coverage in light, not affected by the presence of described detection object composition,
Described signal output portion is also comprised the signal of the information relevant with the intensity of described bias light as described judgement signal
Output.
5. gas componant detection means according to claim 4 it is characterised in that
When the difference of the described intensity interacting into light splitting and the intensity of described bias light becomes more than second value, judge
Described detection object composition is contained for flowing through in gas in described pipeline.
6. the gas componant detection means according to any one in Claims 1 to 5 it is characterised in that
Described gas componant detection means also includes light collecting part, and the focus of described measurement light is arranged on described pipe by described light collecting part
On the inwall in road,
Described signal output portion is according in described detection light, strong by the composition of the inwall reflection of described pipeline and/or scattering
Degree, output can calculate the signal of the concentration of described detection object composition.
7. the gas componant detection means according to any one in claim 1～6 it is characterised in that
Described detection object composition is hydrargyrum.
8. the gas componant detection means according to any one in claim 1～7 it is characterised in that
Described light source selects from xenon lamp, led or laser diode.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015-142206 | 2015-07-16 | ||
| JP2015142206A JP6523840B2 (en) | 2015-07-16 | 2015-07-16 | Gas component detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106353263A true CN106353263A (en) | 2017-01-25 |
Family
ID=57843189
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610550431.4A Pending CN106353263A (en) | 2015-07-16 | 2016-07-13 | Gas ingredient detection device |
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| JP (1) | JP6523840B2 (en) |
| CN (1) | CN106353263A (en) |
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| CN109596541A (en) * | 2018-11-07 | 2019-04-09 | 北京东方安杰科技有限公司 | A kind of light source state detection system and its detection method |
| CN117280196A (en) * | 2021-04-13 | 2023-12-22 | 国立大学法人香川大学 | Spectrometry device and spectrometry method |
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| JP2017026345A (en) | 2017-02-02 |
| JP6523840B2 (en) | 2019-06-05 |
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