CN208334191U - A kind of foul gas detection system - Google Patents
A kind of foul gas detection system Download PDFInfo
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- CN208334191U CN208334191U CN201820641631.5U CN201820641631U CN208334191U CN 208334191 U CN208334191 U CN 208334191U CN 201820641631 U CN201820641631 U CN 201820641631U CN 208334191 U CN208334191 U CN 208334191U
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Abstract
The utility model relates to field of gas detection, refer in particular to a kind of foul gas detection system, include light supply apparatus, detection device, chromacoder and data analysis set-up；Detection device includes beam splitter, light source is projected to the first detector and the second detector respectively by beam splitter, and gas cell is provided between beam splitter and the second detector, muti-piece is provided in gas cell can increase the first reflective mirror of light path of the light beam in gas cell.The utility model splits the beam into two beams by beam splitter, first light beam is directly entered to be detected in the first detector, light path of second light beam in gas cell enters the second detector after being lengthened out and is detected, data information is collected and is transmitted to data analysis set-up by chromacoder and is compared, foul gas can fast and accurately be detected, solve the problems, such as that the detection in the presence of the prior art takes a long time, is difficult to fast and accurately to be detected and data analysis.
Description
Technical field
The utility model relates to field of gas detection, refer in particular to a kind of foul gas detection system.
Background technique
As people's lives level is higher and higher, the requirement to environment is also higher and higher.When there are unpleasant in air
When stench, it so that people is generated sense of discomfort, be also easy to impact people's health, therefore air must be detected
Come the case where controlling foul gas in air.It is gentle that the existing method detected to foul gas is generally spectrophotometry
Phase chromatography, but spectrophotometry can only detect the single component in foul gas；And by gas chromatography to effluvium
When body is detected, testing result shows slow, and detection time is longer, and analysis program is complicated, it is difficult to effluvium
Body is fast and accurately detected.
The utility model patent of Patent No. 201420361545.0 discloses a kind of environmental malodors gas detecting instrument, including
Analyzer, filter, air pump, sampling gun and cabinet, the filter are made of grade one filter and secondary filter, and described point
Parser includes electrochemical sensor, photoion gas sensor, interface board and display screen, and the photoion gas sensor is by light
Source, spectrometer and gas compartment composition, the upside of the open end of the gas compartment are connect by pipeline with the electrochemical sensor,
The electrochemical sensor is connect by pipeline with the secondary filter, passes through pipeline on the upside of the closed end of the gas compartment
It is connect with the air pump and sampling gun.The utility model is by being integrated in one for electrochemical sensor and photoion gas sensor
It rises, the indexs such as ammonia, hydrogen sulfide, methyl mercaptan, TVOC can be detected simultaneously, which can detect in foul gas simultaneously
Heterogeneity, but not can solve in the prior art existing detection take a long time, be difficult to fast and accurately to be detected and
The problem of data are analyzed.
Utility model content
The goal of the invention of the utility model is: taking a long time, is difficult to solve the detection in the presence of the prior art
Fast and accurately detected and data analyze the problem of, the utility model provides a kind of foul gas detection system.
In order to solve the problems of in the prior art, the utility model uses following technical scheme:
A kind of foul gas detection system includes light supply apparatus, detection device, chromacoder and data analysis dress
It sets；The light supply apparatus and the chromacoder are connected with the data analysis set-up respectively, and light supply apparatus can be institute
It states detection device and light source is provided；The detection device includes beam splitter, the first detector, gas cell and the second detector；Institute
Light source is stated by beam splitter respectively to first detector and the second detector outgoing beam, and the beam splitter and institute
It states and is provided with the gas cell between the second detector, muti-piece is provided in the gas cell can increase the light beam in the gas
First reflective mirror of the light path in body pond；First detector and second detector are for detecting by the beam splitter
Light beam；The chromacoder is connect with first detector and second detector respectively, the signal conversion
Light beam for being converted into data information and collecting the data information by device；The data analysis set-up and the signal converting means
Connection is set, the data analysis set-up is for analyzing the data information.
A kind of improvement of technical solution as the utility model foul gas detection system, the beam splitter and described the
The second reflective mirror, direction of second reflective mirror for changing the first light beam, first light are provided between one detector
Shu Weicong beam splitter travels to the light beam of the first detector.
A kind of improvement of technical solution as the utility model foul gas detection system, the gas cell and described the
It is provided with condenser between two detectors, the condenser is used for gathering by the second light beam of the gas cell, and described the
Two light beams are the light beam for traveling to the second detector by gas cell from beam splitter.
A kind of improvement of technical solution as the utility model foul gas detection system, the chromacoder are
Oscillograph or data collecting card.
A kind of improvement of technical solution as the utility model foul gas detection system, the data analysis set-up packet
Computer is included.
A kind of improvement of technical solution as the utility model foul gas detection system, the light supply apparatus include
Laser controller and the laser connecting with the laser controller, the laser can be to the beam splitter outgoing beams.
A kind of improvement of technical solution as the utility model foul gas detection system, the laser are tunable
Pulsed qc laser, the wave-length coverage that the tunable pulsed qc laser projects are 8.6-10.2 μ
m。
A kind of improvement of technical solution as the utility model foul gas detection system, the foul gas detection system
System further includes having sample sack and exhaust gas bag, and the gas cell includes air inlet and air outlet, and the air inlet and sample sack connect
It connects, the gas outlet is connect with exhaust gas bag；Aspiration pump is provided between the air inlet and the sample sack.
A kind of improvement of technical solution as the utility model foul gas detection system, first detector and
Two detectors are MCT detector.
The utility model has the beneficial effects that
The utility model according to foul gas middle infrared band characteristic absorption spectrum and langbobier law, by point
Beam device splits the beam into two beams, and wherein light beam is directly entered is detected in the first detector, and another light beams are in gas
Light path in body pond enters the second detector and is detected after being lengthened out, then data information is received by chromacoder
Collect and be transmitted to the comparison that data analysis set-up carries out data, foul gas can fast and accurately be detected, be solved
Detection in the presence of the prior art takes a long time, is difficult to fast and accurately be detected and the problem of data are analyzed.
Detailed description of the invention
Fig. 1 is the schematic diagram of the utility model.
Description of symbols: 1-beam splitter；2-the first detectors；3-gas cells；4-the second detectors；5 -
Oscillograph；6-aspiration pumps；7-computers；8-the second reflective mirrors；9-condensers；10-laser controllers；11 -
Tunable pulsed qc laser；12-air inlets；13-gas outlets；14-sample sacks；15-exhaust gas bags.
Specific embodiment
It is practical below in conjunction with this to keep the goal of the invention, technical scheme and beneficial effects of the utility model clearer
Attached drawing in new embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that institute
The embodiment of description is only the utility model a part of the embodiment, instead of all the embodiments.Based on the utility model
Embodiment, every other embodiment obtained by those of ordinary skill in the art without making creative efforts, all
Belong to the range of the utility model protection.
As shown in Figure 1, solid line indicates the electrical connection between each component, dotted line indicates the propagation path of light beam.A kind of stench
Gas detecting system, using foul gas middle infrared band characteristic absorption spectrum and langbobier law as foundation, to use
Person provides a kind of foul gas detection system that can be fast and accurately detected to foul gas and data are analyzed.
The foul gas detection system includes light supply apparatus, detection device, chromacoder and data analysis set-up,
Light supply apparatus and chromacoder are connected with data analysis set-up respectively, and detection device is connected with chromacoder,
Chromacoder is connected with data analysis set-up.Light supply apparatus can provide light source for detection device, detection device for pair
Light beam is detected, and chromacoder is used to the resulting result of detection device be converted to data information, and data information
It collects, data analysis set-up is for analyzing the result that data have obtained gas detection.In more detail, light supply apparatus and detection fill
The connection set is light connects, and the light connects refer to that the light beam projected from light supply apparatus is injected into detection device, then examine
Surveying device is that light beam is detected.
Detection device includes beam splitter 1, the first detector 2, the second detector 4 and gas cell 3, and light source passes through beam splitter
1 is provided with gas to 4 outgoing beam of the first detector 2 and the second detector, and between beam splitter 1 and the second detector 4 respectively
Pond 3.The light beam that light source projects is divided into two beams by beam splitter 1, and the light beam for traveling to the first detector 2 from beam splitter 1 is the first light
Beam is then propagate into the light beam of the second detector 4 from beam splitter 1 by gas cell 3 as the second light beam.First detector 2 and
Two detectors 4 are also connect with chromacoder respectively.The first reflective mirror of muti-piece is provided in gas cell 3, the first reflective mirror is used
In increasing light path of the light beam in gas cell 3, when the second light beam enters gas cell 3, due to being provided with muti-piece the in gas cell 3
One reflective mirror, the second light beam are repeatedly turned back in gas cell 3, can increase light path in the gas cell 3 of limited bulk, can be effective
Improve the sensitivity of the utility model foul gas detection system.
When in use, light supply apparatus is divided into 1 outgoing beam of beam splitter, light beam by beam splitter 1 the utility model
First light beam and the second light beam.Using the first light beam as reference beam, the second light beam is as sample beam, when the first light beam and
After two light beams are detected when arriving separately at the first detector 2 and the second detector 4, chromacoder is converted optical signals to
Electric signal, and the data of electric signal are acquired, the electric signal of acquisition is handled and is analyzed by data analysis set-up.It is examining
It is found that the variation of the first light beam luminous intensity can eliminate the fluctuation of the luminous intensity of laser itself, then during survey
Improve the accuracy of the noise when result of foul gas detection system.Simultaneously as middle infrared band is black light, disliking
Visible light is converted laser light into so as to the road direction of auxiliary adjustment light beam using the photosensitive card of infrared light in odour detection system, is made
Corresponding signal reaches most strong on first detector 2 and the second detector 4, and then data information is received by chromacoder
Collect and be transmitted to the comparison that data analysis set-up carries out data, foul gas can fast and accurately be detected, be solved
Detection in the presence of the prior art takes a long time, is difficult to fast and accurately be detected and the problem of data are analyzed.It is preferred that
, the first detector 2 and the second detector 4 are MCT detector, and the sensitivity of MCT detector is higher, can more accurately obtain
The result of detection.
Chromacoder be oscillograph 5 or data collecting card, can be the inspection of the first detector 2 and the second detector 4
Survey result and electric signal converted optical signals to by chromacoder, and pass through chromacoder the data of electric signal into
Row acquisition.
Data analysis set-up includes the computer 7 connecting with chromacoder, and number can be analyzed by being equipped in computer 7
It is believed that the software of breath, by software analysis to the testing result for comparing the first light beam and the second light beam.
The second reflective mirror 8 is provided between beam splitter 1 and the first detector 2, the second reflective mirror 8 is for changing the first light beam
Direction, convenient for the first light beam from beam splitter 1 come out after be easier reach the first detector 2.
Condenser 9 is provided between gas cell 3 and the second detector 4, condenser 9 can be the second light by gas cell 3
Constriction gathers and travels on the second detector 4, and the second light beam can be made to gather on the second detector 4 as much as possible.
Light supply apparatus includes laser controller 10 and the laser that connect with laser controller 10, and laser can be to beam splitting
1 outgoing beam of device, it is preferred that laser is tunable pulsed qc laser 11, tunable pulsed QC
The wave-length coverage that laser 11 projects is 8.6-10.2 μm, this wave band can be realized the inspection of a variety of foul gas such as ammonia, toluene
It surveys, and can effectively avoid the more nitrogen of content in air, oxygen, carbon dioxide gas and water vapour and detection effect is done
It disturbs.
Gas cell 3 includes air inlet 12 and gas outlet 13, and air inlet 12 is connected to sample sack 14 and gas cell by pipeline
3, gas outlet 13 is connected to exhaust gas bag 15 and gas cell 3 by pipeline, it is preferred that passes through pipeline between air inlet 12 and sample sack 14
It is connected with aspiration pump 6, aspiration pump 6 can accelerate flowing of the foul gas in gas cell 3.
Claims (9)
1. a kind of foul gas detection system, which is characterized in that include light supply apparatus, detection device, chromacoder and
Data analysis set-up；
The light supply apparatus and the chromacoder are connected with the data analysis set-up respectively, and light supply apparatus can be institute
It states detection device and light source is provided；
The detection device includes beam splitter, the first detector, gas cell and the second detector；The light source passes through beam splitter
Respectively to first detector and the second detector outgoing beam, and between the beam splitter and second detector
It is provided with the gas cell, muti-piece is provided in the gas cell can increase the of light path of the light beam in the gas cell
One reflective mirror；First detector and second detector are used to detect the light beam by the beam splitter；
The chromacoder is connect with first detector and second detector respectively, the chromacoder
For light beam to be converted into data information and collects the data information；
The data analysis set-up is connect with the chromacoder, and the data analysis set-up is for analyzing the data letter
The starting of breath and control light supply apparatus.
2. foul gas detection system according to claim 1, which is characterized in that the beam splitter and first detection
Be provided with the second reflective mirror between device, second reflective mirror for changing the first light beam direction, first light beam be from
Beam splitter travels to the light beam of the first detector.
3. foul gas detection system according to claim 1, which is characterized in that the gas cell and second detection
Condenser is provided between device, the condenser is used to the second light beam for passing through the gas cell gather, second light beam
For the light beam for traveling to the second detector by gas cell from beam splitter.
4. foul gas detection system according to claim 1, which is characterized in that the chromacoder is oscillograph
Or data collecting card.
5. foul gas detection system according to claim 1, which is characterized in that the data analysis set-up includes meter
Calculation machine.
6. foul gas detection system described in -5 any one according to claim 1, which is characterized in that the light supply apparatus packet
The laser for including laser controller and connecting with the laser controller, the laser can project light to the beam splitter
Beam.
7. foul gas detection system according to claim 6, which is characterized in that the laser is tunable pulsed
Quantum cascade laser, the wave-length coverage that the tunable pulsed qc laser projects are 8.6-10.2 μm.
8. foul gas detection system according to claim 1, which is characterized in that the foul gas detection system is also wrapped
Sample sack and exhaust gas bag are included, the gas cell includes air inlet and air outlet, and the air inlet is connect with sample sack, described
Gas outlet is connect with exhaust gas bag；Aspiration pump is provided between the air inlet and the sample sack.
9. foul gas detection system according to claim 1, which is characterized in that first detector and the second detection
Device is MCT detector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820641631.5U CN208334191U (en) | 2018-05-02 | 2018-05-02 | A kind of foul gas detection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820641631.5U CN208334191U (en) | 2018-05-02 | 2018-05-02 | A kind of foul gas detection system |
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| Publication Number | Publication Date |
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| CN208334191U true CN208334191U (en) | 2019-01-04 |
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ID=64779581
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| Application Number | Title | Priority Date | Filing Date |
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| CN201820641631.5U Active CN208334191U (en) | 2018-05-02 | 2018-05-02 | A kind of foul gas detection system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111896492A (en) * | 2020-06-29 | 2020-11-06 | 山东师范大学 | Long-optical-path gas detection system and method based on quantum cascade laser |
| CN112748088A (en) * | 2021-01-04 | 2021-05-04 | 安徽中科华仪科技有限公司 | Double-light-path transceiving integrated vertical motor vehicle tail gas remote sensing device |
-
2018
- 2018-05-02 CN CN201820641631.5U patent/CN208334191U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111896492A (en) * | 2020-06-29 | 2020-11-06 | 山东师范大学 | Long-optical-path gas detection system and method based on quantum cascade laser |
| CN112748088A (en) * | 2021-01-04 | 2021-05-04 | 安徽中科华仪科技有限公司 | Double-light-path transceiving integrated vertical motor vehicle tail gas remote sensing device |
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