CN201965091U - Multi-component gas analyzer and gas analysis and detection system - Google Patents
Multi-component gas analyzer and gas analysis and detection system Download PDFInfo
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- CN201965091U CN201965091U CN 201120025731 CN201120025731U CN201965091U CN 201965091 U CN201965091 U CN 201965091U CN 201120025731 CN201120025731 CN 201120025731 CN 201120025731 U CN201120025731 U CN 201120025731U CN 201965091 U CN201965091 U CN 201965091U
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- air chamber
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- pyroscan
- component gas
- analyzing instrument
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Abstract
The utility model relates to gas analysis equipment, and discloses a multi-component gas analyzer which comprises a gas chamber whose inner wall is polished, wherein a gas inlet and a gas outlet are formed on the side walls of the two ends of the gas chamber respectively, the two ends of the gas chamber are made of a material with high infrared ray transmittance, a gas source is arranged outside one end of the gas chamber, an infrared ray detector is arranged at the other end of the gas chamber and can receive the light which goes through the gas chamber from the light source, the infrared ray detector is a multi-window infrared ray detector with far-infrared filters of different wave bands or a changing device which is arranged between the gas chamber and the infrared ray detector to change far-infrared filters of different wave bands, and the light source and the infrared ray detector are electrically connected with the a control motherboard. The utility model also discloses a gas analysis and detection system. The multi-component gas analyzer and the gas analysis and detection system have the advantages of capability of detecting different types of gases, simple structure, high sensitivity and low running cost.
Description
Technical field
The utility model relates to gas analysis equipment, especially relates to a kind ofly analyzing multiple gases simultaneously high Multi-Component Gas Analyzing instrument and the gas analysis detection system thereof of monitoring efficient.
Background technology
Along with expanding economy, China's environmental pollution is serious day by day, and the discharge of major pollutant amount far surpasses environmental capacity, and there are 3715 families in the waste gas key monitoring enterprise of country's announcement at present.Wherein gaseous contaminant is the pith of environmental monitoring.The atmospheric pollution of China is called as atmosphere five big pollutants based on sulphuric dioxide and oxides of nitrogen with carbon monoxide, hydrocarbon and particle.Source of atmospheric pollution monitoring is the ladder of management of Air Pollution Control and improvement.Existing flue gas analyzer majority is a photodetector on the market, and because of it needs and sampling pipe is operated near the flue together, environment temperature is up to 70-80 degree centigrade, and long-term work causes its job insecurity, easy again aged deterioration; Existing flue gas analyzer can not be analyzed multiple gases mostly simultaneously, and monitoring efficient is not high.
Summary of the invention
At problem set forth above, the utility model purpose be to provide a kind of can be simultaneously or timesharing analyze multiple gases, the high Multi-Component Gas Analyzing instrument of monitoring efficient.
The utility model is realized by following technical measures, a kind of Multi-Component Gas Analyzing instrument, the air chamber that comprises the inwall polishing, wherein the sidewall of air chamber two ends is provided with air intake opening and exhausr port respectively, two ends of this air chamber are the high material of infrared ray transmitance, air chamber one end is outside equipped with a light source, the other end of air chamber is provided with one and fits and can receive light source penetrates light through air chamber pyroscan, described pyroscan is to contain between the multiwindow pyroscan of far infrared optical filter of different-waveband or air chamber and the pyroscan to be provided with the more changing device of changing different-waveband far infrared optical filter, and described light source and pyroscan are electrically connected with control main board.
As a kind of optimal way, described far infrared optical filter more changing device is provided with at propulsion system and drives or staff is changed the far infrared optical filter of different-waveband between air chamber and pyroscan at interval, described control main board or also be electrically connected with propulsion system.
Described light source preferred pulse radial pattern nickel filament light source.
As a kind of optimal way, described air chamber is the gold-plated air chamber of aluminium alloy polishing back inwall.Its reflecting system height, chemical stabilization can be not oxidized.
Concrete, described air chamber two ends all seal and are pasted with the high calcium fluoride optical glass of infrared ray transmitance.
Concrete, the diameter of described air chamber is 20mm, length is 240mm.The diameter of air chamber also can impact measuring, and too slightly can make to measure to lag behind too detailed rules and regulations lowering apparatus sensitivity.
As a kind of optimal way, described pyroscan is a pyroelectric detector.It is fast that it has the response time, highly sensitive, and very wide spectral response is arranged, influenced by ambient temperature little, the impedance advantages of higher.
Described far infrared optical filter is a narrow band pass filter, the preferred ZnSe of the substrate of optical filter, Si or Ge glass, the 10.6 μ m every 25mm in place see through degree of deformation less than 0.1 λ, optical filter is coated with anti-reflection film.Optical filter can make one section narrower spectrum transmitting, and it is relevant with refractive index, thickness and the number of plies of coating material that it sees through wavelength.
As a kind of optimal way, be provided with the gentle room temperature sensor of the air chamber heating arrangement that is connected electrically on the control main board in the described air chamber.
As a kind of optimal way, other pyroscan heating arrangement and the pyroscan temperature sensor that is connected electrically on the control main board that be provided with of described pyroscan.
The invention also discloses a kind of gas analysis detection system in conjunction with above-mentioned Multi-Component Gas Analyzing instrument, comprise the Multi-Component Gas Analyzing instrument, pipe connects the sampling flow meter of Multi-Component Gas Analyzing instrument air intake opening, the sampling flow meter divides by first reversal valve no matter connects the outlet of calibrating gas bottle and filtrator, the inlet of filtrator connects sampling pump by pipe, the inlet of sampling pump divides by second reversal valve no matter connects air and flue gas sampler, and this flue gas sampler is communicated with the environment gas of required detection.
The measuring principle of optical module of the present utility model is as follows: optical module is based on non-dispersion infrared and absorbs (NDIR) principle probe gas concentration.Because molecular vibration, gas molecule has characteristic absorption spectrum at infrared band, and gas is to the concentration that how much depends on gas to be measured of the absorption of Infrared.Before infrared eye, add corresponding optical filter, make detector obtain only right signal value with the gas absorption wave band.Place different optical filters, just can measure many group gases simultaneously.The detector that optical module uses is a thermal conductivity detector and since thermal conductivity detector only pulse signals response is arranged, so infrared light supply must be modulated into pulsed light, so use pulse infrared light source, and do not need to add the modulation chopper blade of machinery transhipment.Except the detector of correspondence gas to be measured, assembly also has a reference detector, and gas to be measured does not have infrared absorption at this wave band.
The utility model has very strong corrosion resistance owing to adopt the gold-plated air chamber of aluminium alloy polishing back inwall, handles through mirror polish or gold-plated on the wall within it again at inside surface, has extremely high decay resistance, and has very good optical performance.In addition, because the end cap of end use activity can make the processing cleaning of printing opacity end cap and sample air-capacitor device separately carry out aborning, make its convenient processing; And in use,, as adhered to dust or other influences the material of optical property in case sample air-capacitor device passage is contaminated, and then can open the end cap at two ends, carry out clean and maintenance, have good maintainability; Or just in case end cap eyeglass cracking, then only need to change end cap; Or sample air-capacitor device inside is subjected to heavy corrosion, then only need more vary the air-capacitor device, and end cap and top eyeglass thereof can continue to use, and have reduced maintenance cost well.
The utility model compared with prior art has can detect multiple gases, (employing pyroelectric detector) simple in structure, highly sensitive, characteristics that operating cost is low.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment 1 gas analyzer;
Fig. 2 is the structural representation of the pyroelectric detector of the utility model embodiment 1 four-light mouth;
Fig. 3 is the structural representation of the utility model embodiment 2 gas analyzers;
Fig. 4 is the structural representation of the utility model gas analysis detection system.
Embodiment
Below in conjunction with embodiment and contrast accompanying drawing the utility model is described in further detail.
Embodiment 1
As Fig. 1, Fig. 2, a kind of Multi-Component Gas Analyzing instrument that can detect multiple gases simultaneously, comprise that the gold-plated diameter of aluminium alloy polishing back inwall is 20mm, length is the U type air chamber 102 of 240mm, be provided with the gold-plated catoptron 101 of brass of 12.5 microns of symmetrical surfacenesses at the bottom of the U type of air chamber 102, wherein the sidewall of air chamber 102 belows two ends is provided with air intake opening 110 and exhausr port 103 respectively, the two ends sealing of this air chamber 102 is pasted with the high calcium fluoride optical glass of infrared ray transmitance, air chamber 102 1 ends are outside equipped with an impulse radiation type nickel filament light source 113, the other end of air chamber 102 is provided with one and fits and can receive light source 113 and see through the pyroelectric detector 107 that air chamber 102 penetrates the four-light mouth of light through catoptron 101, the pyroelectric detector 107 of four-light mouth is provided with the far infrared optical filter window 115 of four different-wavebands, light source 113, pyroelectric detector 107 and stepper motor 106 are electrically connected with control main board 114, be provided with the air chamber heating arrangement 109 gentle room temperature sensors 108 that are connected electrically on the control main board 114 in the air chamber 102, pyroelectric detector 107 other pyroelectric detector heating arrangement 111 and the pyroelectric detector temperature sensors 112 that are connected electrically on the control main board 114 that are provided with.The far infrared optical filter window 115 of four different-wavebands can make narrower four sections different spectrum transmittings, it is relevant with refractive index, thickness and the number of plies of coating material that it sees through wavelength, four and far infrared optical filter window 115 corresponding infrared sensing heads are arranged in the pyroelectric detector 107, the signal that this pyroelectric detector 107 can be responded to four infrared sensing heads simultaneously sends control main board 114 to, and is calculated the content of gas different in the sample gas by control main board 114.
As Fig. 3, the timesharing of a kind of energy detects the Multi-Component Gas Analyzing instrument of multiple gases, comprise that the gold-plated diameter of aluminium alloy polishing back inwall is 20mm, length is the U type air chamber 102 of 240mm, be provided with the gold-plated catoptron 101 of brass of 12.5 microns of symmetrical surfacenesses at the bottom of the U type of air chamber 102, wherein the sidewall of air chamber 102 belows two ends is provided with air intake opening 110 and exhausr port 103 respectively, the two ends sealing of this air chamber 102 is pasted with the high calcium fluoride optical glass of infrared ray transmitance, air chamber 102 1 ends are outside equipped with an impulse radiation type nickel filament light source 113, the other end of air chamber 102 is provided with one and fits and can receive light source 113 and see through the pyroelectric detector 107 that air chamber 102 penetrates light through catoptron 101, be provided with more changing device 105 of far infrared optical filter between air chamber 102 and the pyroscan 107, this far infrared optical filter more changing device 105 is provided with under stepper motor 106 drives at interval far infrared narrow band pass filters 104 different between air chamber 102 and pyroelectric detector 107, light source 113, pyroelectric detector 107 and stepper motor 106 are electrically connected with control main board 114, be provided with the air chamber heating arrangement 109 gentle room temperature sensors 108 that are connected electrically on the control main board 114 in the air chamber 102, pyroelectric detector 107 other pyroelectric detector heating arrangement 111 and the pyroelectric detector temperature sensors 112 that are connected electrically on the control main board 114 that are provided with.The preferred ZnSe of the substrate of optical filter 104, Si or Ge glass, the 10.6 μ m every 25mm in place see through degree of deformation less than 0.1 λ, optical filter 104 is coated with anti-reflection film.Optical filter 104 can make one section narrower spectrum transmitting, and it is relevant with refractive index, thickness and the number of plies of coating material that it sees through wavelength.
A kind of in conjunction with the embodiments 1 or the gas analysis detection system of the Multi-Component Gas Analyzing instrument of embodiment 2, as Fig. 4, comprise Multi-Component Gas Analyzing instrument 1, pipe connects the sampling flow meter 19 of Multi-Component Gas Analyzing instrument 1 air intake opening, sampling flow meter 19 is by first reversal valve 16 minutes no matter connect the outlet of three calibrating gas bottles 21 and a filtrator 15, the inlet of filtrator 15 connects sampling pump 11 by sampling condenser 17 and sample water gas separating device 12 pipes, sampling condenser 17 is provided with sampling temperature controller 14, the inlet of sampling pump 11 is by second reversal valve 10 minutes no matter connect air and flue gas sampler 4, between this second reversal valve 10 and the flue gas sampler 4 also successively pipe be connected to flue gas flow meter 13, flue gas condenser 9 and flue gas moisture separator 7, flue gas condenser 9 is provided with flue gas temperature controller 8, flue gas sampler 4 outlets are provided with flue gas heater 5 and heating temperature control device 6, flue gas sampler 4 is communicated with the environment gas of required detection, flue gas sampler 4 also pipe is connected to blowback pump 3 and the filtrator 2 that flue gas sampler 4 is cleaned, sampling condenser 17, sample water gas separating device 12, the liquid of flue gas condenser 9 and flue gas moisture separator 7 is collected by water trap 18 and is discharged.
The detection method of gas analysis detection system:
1, during zero correction: the outlet that first reversal valve 16 is connected filtrators 15, second reversal valve 10 is connected air intake, air is through sampling pump 11, sample water gas separating device 12, sampling condenser 17, filtrator 15, first reversal valve 16, sampling flow meter 19, enter gas analyzer 1, provide clean air for analyser 1 carries out zero correction;
2, during span calibration: close second reversal valve 10, first reversal valve 16 is connected calibrating gas bottle 21, calibrating gas enters gas analyzer 1 behind pressure-regulating valve 20, first reversal valve 16, sampling flow meter 19, provide the standard span gas for analyser 1 carries out span calibration;
When 3, flue gas is measured: the outlet that first reversal valve 16 is connected filtrator 15, second reversal valve 10 is connected flue gas sampler 4, flue gas keeps high temperature through flue gas heater 5 under the effect of sampling pump 11 negative pressure, in order to avoid condensation and cause concentration change in the flue gas course of conveying; Remove moisture through flue gas moisture separator 7, flue gas condenser 9; Regulate flow through flue gas flow controller 13; Through entering gas analyzer 1 after filter 15 dedustings.For carrying out the flue gas measurement, analyser 1 provides dry, stability of flow flue gas.
More than be that the utility model Multi-Component Gas Analyzing instrument and corresponding gas analysis detection system are set forth; be used for helping to understand the utility model; but embodiment of the present utility model is not restricted to the described embodiments; anyly do not deviate from the change done under the utility model principle, modification, substitute, combination, simplify; all should be the substitute mode of equivalence, be included within the protection domain of the present utility model.
Claims (10)
1. Multi-Component Gas Analyzing instrument, it is characterized in that: the air chamber that comprises the inwall polishing, wherein the sidewall of air chamber two ends is provided with air intake opening and exhausr port respectively, two ends of this air chamber are the high material of infrared ray transmitance, air chamber one end is outside equipped with a light source, the other end of air chamber is provided with one and fits and can receive light source penetrates light through air chamber pyroscan, described pyroscan is to contain between the multiwindow pyroscan of far infrared optical filter of different-waveband or air chamber and the pyroscan to be provided with the more changing device of changing different-waveband far infrared optical filter, and described light source and pyroscan are electrically connected with control main board.
2. Multi-Component Gas Analyzing instrument according to claim 1, it is characterized in that: described far infrared optical filter more changing device is provided with at propulsion system and drives or staff is changed the far infrared optical filter of different-waveband between air chamber and pyroscan at interval, described control main board or also be electrically connected with propulsion system.
3. Multi-Component Gas Analyzing instrument according to claim 1 is characterized in that: described light source is an impulse radiation type nickel filament light source.
4. Multi-Component Gas Analyzing instrument according to claim 1 is characterized in that: described air chamber is the gold-plated air chamber of aluminium alloy polishing back inwall.
5. Multi-Component Gas Analyzing instrument according to claim 1 is characterized in that: described air chamber two ends all seal and are pasted with the high calcium fluoride optical glass of infrared ray transmitance.
6. Multi-Component Gas Analyzing instrument according to claim 1 is characterized in that: the diameter of described air chamber is 20mm, and length is 240mm.
7. Multi-Component Gas Analyzing instrument according to claim 1 is characterized in that: described pyroscan is a pyroelectric detector.
8. Multi-Component Gas Analyzing instrument according to claim 1 is characterized in that: be provided with the gentle room temperature sensor of the air chamber heating arrangement that is connected electrically on the control main board in the described air chamber.
9. Multi-Component Gas Analyzing instrument according to claim 1 is characterized in that: other pyroscan heating arrangement and the pyroscan temperature sensor that is connected electrically on the control main board that be provided with of described pyroscan.
10. in conjunction with the gas analysis detection system of the described Multi-Component Gas Analyzing instrument of claim 1, it is characterized in that: comprise the Multi-Component Gas Analyzing instrument, pipe connects the sampling flow meter of Multi-Component Gas Analyzing instrument air intake opening, the sampling flow meter divides by first reversal valve no matter connects the outlet of calibrating gas bottle and filtrator, the inlet of filtrator connects sampling pump by pipe, the inlet of sampling pump divides by second reversal valve no matter connects air and flue gas sampler, and this flue gas sampler is communicated with the environment gas of required detection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120025731 CN201965091U (en) | 2011-01-26 | 2011-01-26 | Multi-component gas analyzer and gas analysis and detection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120025731 CN201965091U (en) | 2011-01-26 | 2011-01-26 | Multi-component gas analyzer and gas analysis and detection system |
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| Publication Number | Publication Date |
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| CN201965091U true CN201965091U (en) | 2011-09-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201120025731 Expired - Lifetime CN201965091U (en) | 2011-01-26 | 2011-01-26 | Multi-component gas analyzer and gas analysis and detection system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102636266A (en) * | 2012-03-30 | 2012-08-15 | 上海傲谱分析仪器有限公司 | Light splitting and photoelectric detecting system for flame photometer |
| CN104797926A (en) * | 2012-11-30 | 2015-07-22 | 松下知识产权经营株式会社 | Optical sensor apparatus, and method for manufacturing optical element to be used in optical sensor apparatus |
-
2011
- 2011-01-26 CN CN 201120025731 patent/CN201965091U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102636266A (en) * | 2012-03-30 | 2012-08-15 | 上海傲谱分析仪器有限公司 | Light splitting and photoelectric detecting system for flame photometer |
| CN104797926A (en) * | 2012-11-30 | 2015-07-22 | 松下知识产权经营株式会社 | Optical sensor apparatus, and method for manufacturing optical element to be used in optical sensor apparatus |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110907 |