CN207472755U - A kind of twin-stage enhanced photo acoustic spectroscopic detector device - Google Patents
A kind of twin-stage enhanced photo acoustic spectroscopic detector device Download PDFInfo
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- CN207472755U CN207472755U CN201721674159.7U CN201721674159U CN207472755U CN 207472755 U CN207472755 U CN 207472755U CN 201721674159 U CN201721674159 U CN 201721674159U CN 207472755 U CN207472755 U CN 207472755U
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Abstract
The utility model provides a kind of twin-stage enhanced photo acoustic spectroscopic detector device.It is moved towards according to the sequence of photoacoustic spectroscopy, twin-stage enhanced photo acoustic spectroscopic detector device includes pulse infrared light source, analysis gas chamber and optoacoustic light room successively, the gas outlet of analysis gas chamber is connect with voltage-stabilizing system, the air inlet of analysis gas chamber is sequentially communicated cycle air pump and continuous negative pressure degasser, analyzes and is provided with filter wheel between gas chamber and optoacoustic light room；Several several optical filters being distributed uniformly and circumferentially are provided on filter wheel；Twin-stage enhanced photo acoustic spectroscopic detector device is additionally provided with communication module and data processing module, analyze gas chamber and optoacoustic light room and data processing module signal in succession, pulse infrared light source, analysis gas chamber, filter wheel, optoacoustic light room, cycle air pump, continuous negative pressure degasser and data processing module are connect, and pass through communication module and connect with master station computer data transmission with communication module data transmission respectively.
Description
Technical field
The utility model belongs to detecting system technical field, is related to a kind of twin-stage enhanced photo acoustic spectroscopic detector device.
Background technology
In traditional spectrum, light scattering, reflection is the largest interference, therefore the size of sample absorption light energy is to pass through survey
Measuring the intensity of transmitted light and the difference obtained by transmitted intensity is subtracted from incident intensity comes determining, and light and tissue are mutual
Mechanism is necessarily accompanied with certain reflection, scattering and other light losses, this reduction that will lead to incident intensity.This
Outside, traditional optoacoustic spectroscopy detection is light and the optical signal transmissive after tissue interaction, therefore sample must just have centainly
Translucency.In contrast, what optoacoustic spectroscopy detected is the ultrasonic signal generated due to tissue resorption luminous energy, it is this super
The power of acoustical signal directly reflects the size of material absorbing light energy.So as to avoid the reflection because of light in sample, scattering etc.
Caused signal interference；It can also suitably increase the irradiation power of incident light for weak absorbing sample to improve signal-to-noise ratio simultaneously.
Therefore, it be widely used in it is various experiment detection, such as transparent or opaque solid, liquid, gas, colloid, crystal or
It is noncrystal etc., inherently solve transmission spectra method to weak absorbing, strong divergence, the problem of the sample detections such as opaque.
But general optoacoustic spectroscopy detection device generally existing problems with：(1) existing optoacoustic spectroscopy detection device
Can only be then injected into optoacoustic spectroscopy detection device by gas production bag gas production, due to the leakproofness of gas production bag, gatherer process and
Resting period can all have an impact the concentration of decomposition components, therefore cannot be guaranteed the precision of detection；(2) existing optoacoustic spectroscopy inspection
It is huge to survey device volume, by multiple (wide range infrared light supply, zinc selenide lens, chopper, chopper controller, optical filter wheel, filters
Mating plate, zinc selenide window, photoacoustic cell, optical bracket, lock-in amplifier and computer etc.) separation element form, onsite application
It is inconvenient；(3) in detection method, manual operation is more, and reading must be not easy to live automatic detection by oscillograph.
Utility model content
In view of the shortcomings that above-mentioned prior art, the purpose of this utility model is to provide kind of a twin-stage enhanced photo acoustic spectrum inspections
Survey device device.This kind of twin-stage enhanced photo acoustic spectroscopic detector device can carry out untouchable measurement, not consume gas；It is and whole
Body is simple in structure, and floor space is small, easily operated.
In order to reach aforementioned purpose of utility model, the utility model provides a kind of twin-stage enhanced photo acoustic spectral detection
Device device is moved towards according to the sequence of photoacoustic spectroscopy, and the twin-stage enhanced photo acoustic spectroscopic detector device includes arteries and veins successively
Infrared light supply, analysis gas chamber and optoacoustic light room are rushed, the gas outlet of the analysis gas chamber is connect with voltage-stabilizing system, the analysis gas chamber
Air inlet be sequentially communicated cycle air pump and continuous negative pressure degasser, set between the analysis gas chamber and the optoacoustic light room
There is filter wheel；
Several several optical filters being distributed uniformly and circumferentially are provided on the filter wheel；
The twin-stage enhanced photo acoustic spectroscopic detector device is additionally provided with communication module and data processing module, described point
Gassing room and optoacoustic light room with the data processing module signal in succession, the pulse infrared light source, analysis gas chamber, filter wheel,
Optoacoustic light room, cycle air pump, continuous negative pressure degasser and data processing module connect respectively with the communication module data transmission
It connects, and is connect by the communication module with master station computer data transmission.
Specific embodiment according to the present utility model, it is preferable that the data processing module includes microcontroller, the monolithic
Software program is provided on machine, the twin-stage enhanced photo acoustic spectroscopic detector device is automatically controlled and is detected.
Specific embodiment according to the present utility model, it is preferable that the communication module passes through with the master station computer
MODBUS IEC61850 agreements carry out data transmission；It is suitble to extensive extension.
Above-mentioned data processing module can be microcontroller, and microcontroller is provided with automated procedures, can control analysis gas chamber,
The optoacoustic spectroscopy detection and each module, functional component that continuous negative pressure degasser, filter wheel and optoacoustic light room are automated
Self-test, and detection and self-detection result are transferred to master station computer by communication module and shown, to carry out subsequent man-machine friendship
Mutually.
Above-mentioned twin-stage enhanced photo acoustic spectroscopic detector device realizes inspection by voltage-stabilizing system and continuous negative pressure degasser
That surveys gas stablizes abjection, and then gas chamber and the detection of optoacoustic light room twice by analysis, can realize to the multigroup of abjection gas
Divide gas analysis, analog signal detection and Digital Signal Processing；Each Function detection device in device passes through communication module and master
Computer of standing realizes data transmission connection, and operating personnel can be realized man-machine with device by the system software of master station computer
Interaction.It is real can be arranged as required to necessary solenoid valve for connection to above-mentioned twin-stage enhanced photo acoustic spectroscopic detector device
The circulation of existing detection gas.
Specific embodiment according to the present utility model, it is preferable that the optoacoustic light room is provided with photoacoustic cell and optoacoustic spectroscopy
Detector.
Specific embodiment according to the present utility model, it is preferable that the resolution ratio of the optoacoustic spectroscopy detector is 0.1ppm,
Accuracy is ± 3%.
Specific embodiment according to the present utility model, it is preferable that the optoacoustic spectroscopy detector includes capillary, sound pick-up
With photoacoustic signal amplifier；
The capillary and sound pick-up are connect respectively with the photoacoustic signal amplifier signal, the photoacoustic signal amplifier
It is connect with the data processing module signal.
Specific embodiment according to the present utility model, it is preferable that be provided with heating unit and thermal energy in the analysis gas chamber
Absorption detector, the heat absorption detector are connect with the data processing module signal.The voltage-stabilizing system with described point
The first solenoid valve is provided between the gas outlet of gassing room.
Specific embodiment according to the present utility model, it is preferable that the continuous negative pressure degasser is by oil pump, degasser
It is formed with air pump, the oil pump is connected with the degasser with feed(raw material)inlet, the gas of the air pump and the degasser
Body outlet, the air pump are connected with the entrance of the cycle air pump.It is provided between the oil pump and the degasser
Second solenoid valve.
Specific embodiment according to the present utility model, it is preferable that the twin-stage enhanced photo acoustic spectroscopic detector device is also
Touch-sensitive display screen is provided with, the touch-sensitive display screen is connect with the communication module data transmission, and passes through the communication
Module is connect with the master station computer data transmission.
Specific embodiment according to the present utility model, it is preferable that the twin-stage enhanced photo acoustic spectroscopic detector device is also
Hemispherical concave mirror is provided with, the pulse infrared light source is located in the focus of the hemispherical concave mirror.
Different from the analysis of traditional optoacoustic, twin-stage enhanced photo acoustic spectroscopic detector device provided by the utility model is to pass through
Monitoring object is absorbed the part energy showed in the form of acoustic pressure in the thermal energy generated after luminous energy and is detected the qualitative of sample
And quantitative analysis, even if in the case of high reflection weak absorbing, the utility model twin-stage enhanced photo acoustic spectroscopic detector device
In absorption can also can be detected by capillary, sound pick-up, realize preferably without ambient noise signal technology, therefore, this reality
There is higher sensitivity and good selectivity with novel twin-stage enhanced photo acoustic spectroscopic detector device.It is detected with other gases
Method compares, which has that long-time stability are good, high sensitivity；Do not consume gas sample
(such as carrier gas, standard gas)；Detection time is short, convenient for Site Detection；The detection of adapted for many kinds of gas ingredient；System structure is simple etc. excellent
Point.In particular modern biomedical area research provides a kind of advantageous analysis tool.
The utility model also provides the detection method of above-mentioned twin-stage enhanced photo acoustic spectroscopic detector device, including following
Step：
It is analysed to deviate from detection gas in Sample introduction continuous negative pressure degasser, then imports the detection gas
It analyzes and heat absorption and detection is carried out in gas chamber, and by the heat absorption signal transmission of detection gas in the analysis gas chamber to number
It records, analyze according to processing module, obtain the first analysis data；
The detection gas are imported from the analysis gas chamber in the photoacoustic cell of optoacoustic light room, starting impulse infrared light
Source makes the infrared light of generation pass through the detection gas being irradiated in the photoacoustic cell after filter wheel and generate photoacoustic signal, utilizes
The photoacoustic signal is collected and amplified to optoacoustic spectroscopy detector, and amplified photoacoustic signal is transferred to the data processing module remembers
Record, analysis, obtain the second analysis data；
The data processing module carries out comprehensive analysis according to the described first analysis data and the second analysis data, obtains institute
The qualitative analysis of detection gas is stated, and the qualitative analysis is transferred to master station computer by communication module；
Rotating filtering wheel makes the infrared light of generation irradiate the detection gas in the photoacoustic cell after the optical filtering of different optical filters
And generate photoacoustic signal, collected using optoacoustic spectroscopy detector and amplify the photoacoustic signal generated under different wave length infrared light, so
After be transferred to data processing module record, analysis, obtain the quantitative analysis results of the detection gas, and pass through described logical
Module transfer is interrogated to the master station computer.
The detection method of above-mentioned twin-stage enhanced photo acoustic spectroscopic detector device is utilized optoacoustic spectroscopy and carries out gas
Detection and analysis；Different from the detection of traditional optoacoustic spectroscopy, above-mentioned detection method need not generate Photoa-counstic spectra or figure group, utilize dress
Putting included data module (software and hardware of system) can be with automatic data processing, and can transfer data to main website calculating
Machine directly exports testing result.
Specific embodiment according to the present utility model, the analysis sample include the insulating oil of electric device.
Specific embodiment according to the present utility model, the gas to be detected include CH4, C2H6, C2H4, C2H2, H2, N2, water
Steam, CO and CO2The composition of middle one or more.
Above-mentioned detection method provided by the utility model overcomes shadow of the analysis sample tissue scattering properties to measurement result
It rings, sample preprocessed can not carry out lossless effective detection method.
Compared with existing optoacoustic spectroscopy detection device, the utility model has the advantages that：
(1) twin-stage enhanced photo acoustic spectroscopic detector device provided by the utility model realizes untouchable measurement, no
Gas is consumed, the size of luminous energy is absorbed by directly measuring gas, you can carries out the qualitative and quantitative detection of analysis sample；And point
Analysis sample need not detach gas, and the ingredient and content of gas are directly determined by spectrum analysis, and detection speed is fast, it can be achieved that continuous
Property is supplied gas, and continuity accurately measures, and does not fear ambient noise；
(2) under identical gas pond length, the spirit of twin-stage enhanced photo acoustic spectroscopic detector device provided by the utility model
Sensitivity is more much higher than FTIR spectrum, and detection range is wide, and accuracy is high；
(3) each functional component of twin-stage enhanced photo acoustic spectroscopic detector device provided by the utility model is by communicating mould
Block is connect with master station computer data transmission, can real-time self-test, in long-term use, the performance of each device is stablized, Ke Yishi
Existing non-calibrating；In addition, the twin-stage enhanced photo acoustic spectroscopic detector device overall structure is simple, and it is highly practical, it is easy to spread to make
With, and reasonable module design, touch-sensitive display screen is configured, operational comfort is high.
Description of the drawings
Fig. 1 is the structure diagram for the twin-stage enhanced photo acoustic spectroscopic detector device that embodiment 1 provides.
Specific embodiment
In order to which the technical characteristics of the utility model, purpose and advantageous effect are more clearly understood, now to this practicality
Novel technical solution carry out it is described further below, but it is not intended that the utility model can practical range restriction.
Embodiment 1
A kind of twin-stage enhanced photo acoustic spectroscopic detector device is present embodiments provided, structure is as shown in Figure 1, according to light
The sequence trend of acousto-optic spectrum analysis, the twin-stage enhanced photo acoustic spectroscopic detector device include hemispherical concave mirror 1, pulse successively
Infrared light supply 2, analysis gas chamber 3 and optoacoustic light room 5, the gas outlet of analysis gas chamber 3 are connect with voltage-stabilizing system, analyze gas chamber 3 into
Gas port is sequentially communicated cycle air pump and continuous negative pressure degasser, analyzes and is provided with filter wheel 4 between gas chamber 3 and optoacoustic light room 5；
Several several optical filters being distributed uniformly and circumferentially are provided on filter wheel 4；Pulse infrared light source 2 is located at hemispherical concave surface
In the focus of mirror 1,
Twin-stage enhanced photo acoustic spectroscopic detector device is additionally provided with communication module and data processing module, analyzes gas chamber 3
Connect with optoacoustic light room 5 with data processing module signal, pulse infrared light source 2, analysis gas chamber 3, filter wheel 4, optoacoustic light room 5,
Cycle air pump, continuous negative pressure degasser and data processing module are connect, and pass through communication with communication module data transmission respectively
Module is connect with master station computer data transmission,；
Wherein, optoacoustic light room 5 is provided with photoacoustic cell and optoacoustic spectroscopy detector, and the resolution ratio of the optoacoustic spectroscopy detector is
0.1ppm, accuracy are ± 3%；The optoacoustic spectroscopy detector is made of capillary, sound pick-up and photoacoustic signal amplifier, capillary
Pipe absorbs small photoacoustic signal, and sound pick-up detects larger photoacoustic signal, capillary and sound pick-up and photoacoustic signal amplifier
Signal connects, while the photoacoustic signal amplifier is connect with data processing module signal；
Heating unit and heat absorption detector, heat absorption detector and data processing mould are provided in analysis gas chamber 3
Block signal connects；
Continuous negative pressure degasser is made of oil pump, degasser and air pump, oil pump and degasser and feed(raw material)inlet
Connection, air pump are connected with the gas vent of degasser, and air pump is connected with recycling the entrance of air pump；
The twin-stage enhanced photo acoustic spectroscopic detector device is additionally provided with touch-sensitive display screen, touch-sensitive display screen and communication
Module data transmission connection, and pass through communication module and connect with master station computer data transmission.
Twin-stage enhanced photo acoustic spectroscopic detector device provided in this embodiment is deaerated by voltage-stabilizing system and continuous negative pressure
Device, that realizes detection gas stablizes abjection, and then gas chamber and the detection of optoacoustic light room twice by analysis, can realize to abjection
The Multi-Component Gas Analyzing of gas, analog signal detection and Digital Signal Processing；Each Function detection device in device passes through logical
News module and master station computer realize that data transmission connect, operating personnel can by the realization of the system software of master station computer and
The human-computer interaction of device.Connection to above-mentioned twin-stage enhanced photo acoustic spectroscopic detector device, can be arranged as required to necessity
Solenoid valve realize detection gas circulation.
The twin-stage enhanced photo acoustic spectroscopic detector device of the present embodiment is by by the modulated pulsed infrared of a beam intensity
Illumination is mapped in the detection gas being sealed in photoacoustic cell, and detection gas absorb luminous energy, and are excited in a manner of discharging thermal energy.
The thermal energy of release makes detection gas and surrounding medium generate periodic heat by the modulating frequency of light, and week is generated so as to cause medium
The pressure oscillation of phase property.This pressure oscillation can use the high optoacoustic light of this twin-stage enhanced photo acoustic spectroscopic detector device sensitivity
Spectrum detector detects, and passes through amplification and obtain photoacoustic signal and be transferred to data processing module, due to each infrared-activeization
Closing object has its distinctive infrared absorption spectrum, therefore, the data processing module carried using device can to detection gas into
Row qualitative analysis；By changing the pulsed infrared optical wavelength then detectable photoacoustic signal with infrared light wavelength change, dress is utilized
Quantitative analysis to detection gas can be realized by putting included data processing module, and the result of qualitative analysis and quantitative analysis can be with
Master station computer is transferred directly to by communication module to export, without generating Photoa-counstic spectra or figure group.
Different from the analysis of traditional optoacoustic, twin-stage enhanced photo acoustic spectroscopic detector device provided in this embodiment is to pass through prison
Survey object absorb the part energy showed in the form of acoustic pressure in the thermal energy that generates after luminous energy be detected the qualitative of sample and
Quantitative analysis, even if in the case of high reflection weak absorbing, in the present embodiment twin-stage enhanced photo acoustic spectroscopic detector device
Absorption can also can be detected by capillary, sound pick-up, be realized preferably without ambient noise signal technology, therefore, the present embodiment
Twin-stage enhanced photo acoustic spectroscopic detector device have higher sensitivity and good selectivity.With other gas detection method phases
Compare, which has that long-time stability are good, high sensitivity；Gas sample is not consumed (as carried
Gas, standard gas)；Detection time is short, convenient for Site Detection；The detection of adapted for many kinds of gas ingredient；The advantages that system structure is simple.
Embodiment 2
The present embodiment also provides the detection method of 1 twin-stage enhanced photo acoustic spectroscopic detector device of embodiment, including with
Lower step：
The insulating oil for treating electrical equipment is pumped into using oil pump in the degasser of continuous negative pressure degasser, is then started
The degasser is pumped into negative pressure abjection detection gas by air pump, is then imported in analysis gas chamber 3 detection gas and is carried out thermal energy suction
It receives and detects, and the heat absorption signal transmission for analyzing detection gas in gas chamber 3 is obtained to data processing module record, analysis
To the first analysis data；
Detection gas are imported from analysis gas chamber 3 in the photoacoustic cell of optoacoustic light room 5, starting impulse infrared light supply 2 makes production
Raw infrared light passes through the detection gas being irradiated in photoacoustic cell after filter wheel 4 and generates photoacoustic signal, is visited using optoacoustic spectroscopy
It surveys device to collect and amplify the photoacoustic signal, amplified photoacoustic signal is transferred to data processing module record, analysis, obtain the
Two analysis data；
Data processing module carries out comprehensive analysis according to the first analysis data and the second analysis data, obtains detection gas
The qualitative analysis, and the qualitative analysis is transferred to master station computer by communication module；
Rotating filtering wheel 4 makes detection gas of the infrared light of generation after the optical filtering of different optical filters in irradiation photoacoustic cell simultaneously
Photoacoustic signal is generated, collected using optoacoustic spectroscopy detector and amplifies the photoacoustic signal generated under different wave length infrared light, then
Data processing module record, analysis are transferred to, obtains the quantitative analysis results of detection gas, and pass through communication module and be transferred to master
It stands computer；
Wherein, communication module is carried out data transmission with master station computer by MODBUS IEC61850 agreements；It is suitble to
Extensive extension.
Above-mentioned detection gas are nine component gas (including CH4, C2H6, C2H4, C2H2, H2, N2, H2O, CO and CO2) and four groups
Divide gas (C2H2, H2, H2O and CO).
After testing, the twin-stage enhanced photo acoustic spectroscopic detector device of embodiment 1 can be to nine component gas (including CH4,
C2H6, C2H4, C2H2, H2, N2, H2O, CO and CO2) carry out good qualitative and quantitative analysis；It can also be to four component gas
(C2H2, H2, H2O and CO) carry out good qualitative and quantitative analysis.
Above-mentioned detection method provided in this embodiment is different from traditional optoacoustic spectroscopy detection, and it makes use of optoacoustic spectroscopies
Carry out gas detection and analysis, without generating Photoa-counstic spectra or figure group, the data module carried using device (system it is soft or hard
Part) can be with automatic data processing, and master station computer can be transferred data to, testing result is directly exported, is overcome simultaneously
Influence of the analysis sample tissue scattering properties to measurement result, sample preprocessed can not carry out lossless effective detection method.
And the twin-stage enhanced photo acoustic spectroscopic detector device of embodiment 1 can realize that continuity is supplied gas, continuity accurately measures, and does not fear
Be afraid of the effect of ambient noise.
By embodiment 1-2 it is found that compared with existing optoacoustic spectroscopy detection device, twin-stage enhancing provided by the utility model
Type optoacoustic spectroscopy detector means realize untouchable measurement, do not consume gas, absorb luminous energy by directly measuring gas
Size, you can carry out the qualitative and quantitative detection of analysis sample；And analysis sample need not detach gas, it is direct by spectrum analysis
Determine the ingredient and content of gas, detection speed is fast, it can be achieved that continuous measure；Under identical gas pond length, the utility model carries
The remolding sensitivity FTIR spectrum of the twin-stage enhanced photo acoustic spectroscopic detector device of confession is much higher, and detection range is wide, accurate
Exactness is high；Each functional component of twin-stage enhanced photo acoustic spectroscopic detector device provided by the utility model by communication module with
Master station computer data transmission connects, can real-time self-test, in long-term use, the performance of each device is stablized, and can realize and exempt from
Calibration；In addition, the twin-stage enhanced photo acoustic spectroscopic detector device overall structure is simple, highly practical, use easy to spread, and
Reasonable module design, is configured touch-sensitive display screen, and operational comfort is high.
The preferred embodiment of the above, only this patent utility model, it is all not to limit this patent utility model
It is technical spirit any trickle amendment made to the above embodiment according to this patent utility model, equivalent substitute and improvement,
It should be included within the protection domain of this patent utility model technical solution.However this patent utility model is not limited to above-mentioned show
The details of exemplary embodiment, for this field, for technical staff, and in the spirit without departing substantially from this patent utility model or
In the case of essential characteristic, this patent utility model can be realized in other specific forms.Which point therefore, no matter come from
It sees, the present embodiments are to be considered as illustrative and not restrictive, and the range of this patent utility model is by appended right
It is required that rather than above description limit, it is intended that all changes that will be fallen within the meaning and scope of the equivalent requirements of the claims
Change is included in this patent utility model.Any reference numeral in claim should not be considered as to the involved right of limitation will
It asks.
Claims (10)
1. a kind of twin-stage enhanced photo acoustic spectroscopic detector device, it is characterised in that：It is moved towards according to the sequence of photoacoustic spectroscopy,
The twin-stage enhanced photo acoustic spectroscopic detector device includes pulse infrared light source, analysis gas chamber and optoacoustic light room successively, described
The gas outlet of analysis gas chamber is connect with voltage-stabilizing system, and the air inlet of the analysis gas chamber is sequentially communicated cycle air pump and continuous negative pressure
Degasser is provided with filter wheel between the analysis gas chamber and the optoacoustic light room；
Several several optical filters being distributed uniformly and circumferentially are provided on the filter wheel；
The twin-stage enhanced photo acoustic spectroscopic detector device is additionally provided with communication module and data processing module, the analysis gas
In succession, the pulse infrared light source analyzes gas chamber, filter wheel, optoacoustic for room and optoacoustic light room and the data processing module signal
Light room, cycle air pump, continuous negative pressure degasser and data processing module are connect respectively with the communication module data transmission, and
It is connect by the communication module with master station computer data transmission.
2. twin-stage enhanced photo acoustic spectroscopic detector device according to claim 1, it is characterised in that：The optoacoustic light room
It is provided with photoacoustic cell and optoacoustic spectroscopy detector.
3. twin-stage enhanced photo acoustic spectroscopic detector device according to claim 2, it is characterised in that：The optoacoustic spectroscopy
The resolution ratio of detector is 0.1ppm, and accuracy is ± 3%.
4. the twin-stage enhanced photo acoustic spectroscopic detector device according to Claims 2 or 3, it is characterised in that：The optoacoustic
Spectral detector includes capillary, sound pick-up and photoacoustic signal amplifier；
The capillary and sound pick-up are connect respectively with the photoacoustic signal amplifier signal, the photoacoustic signal amplifier and institute
State the connection of data processing module signal.
5. twin-stage enhanced photo acoustic spectroscopic detector device according to claim 1, it is characterised in that：
Heating unit and heat absorption detector, the heat absorption detector and the data are provided in the analysis gas chamber
Processing module signal connects.
6. twin-stage enhanced photo acoustic spectroscopic detector device according to claim 1, it is characterised in that：The continuous negative pressure
Degasser is made of oil pump, degasser and air pump, and the oil pump is connected with the degasser with feed(raw material)inlet, described
Air pump is connected with the gas vent of the degasser, and the air pump is connected with the entrance of the cycle air pump.
7. twin-stage enhanced photo acoustic spectroscopic detector device according to claim 1, it is characterised in that：The twin-stage enhancing
Type optoacoustic spectroscopy detector means are additionally provided with touch-sensitive display screen, and the touch-sensitive display screen is passed with the communication module data
Defeated connection, and connect by the communication module with the master station computer data transmission.
8. twin-stage enhanced photo acoustic spectroscopic detector device according to claim 1, it is characterised in that：The twin-stage enhancing
Type optoacoustic spectroscopy detector means are additionally provided with hemispherical concave mirror, and the pulse infrared light source is located at the hemispherical concave mirror
Focus on.
9. twin-stage enhanced photo acoustic spectroscopic detector device according to claim 1, it is characterised in that：The data processing
Module includes microcontroller, is provided with software program on the microcontroller, automatically controls the twin-stage enhanced photo acoustic spectral detection
Device device is detected.
10. twin-stage enhanced photo acoustic spectroscopic detector device according to claim 1, it is characterised in that：The communication mould
Block is carried out data transmission with the master station computer by MODBUS IEC61850 agreements.
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| CN201721674159.7U CN207472755U (en) | 2017-12-05 | 2017-12-05 | A kind of twin-stage enhanced photo acoustic spectroscopic detector device |
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| CN201721674159.7U CN207472755U (en) | 2017-12-05 | 2017-12-05 | A kind of twin-stage enhanced photo acoustic spectroscopic detector device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107817219A (en) * | 2017-12-05 | 2018-03-20 | 北京国网富达科技发展有限责任公司 | A kind of twin-stage enhanced photo acoustic spectroscopic detector device and its detection method |
| CN115615930A (en) * | 2022-12-17 | 2023-01-17 | 南京客莱沃智能科技有限公司 | Two-stage absorption enhanced photoacoustic spectroscopy gas detection method and device |
-
2017
- 2017-12-05 CN CN201721674159.7U patent/CN207472755U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107817219A (en) * | 2017-12-05 | 2018-03-20 | 北京国网富达科技发展有限责任公司 | A kind of twin-stage enhanced photo acoustic spectroscopic detector device and its detection method |
| CN115615930A (en) * | 2022-12-17 | 2023-01-17 | 南京客莱沃智能科技有限公司 | Two-stage absorption enhanced photoacoustic spectroscopy gas detection method and device |
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