CN206594052U - A kind of self-alignment gas-detecting device - Google Patents
A kind of self-alignment gas-detecting device Download PDFInfo
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- CN206594052U CN206594052U CN201720289421.XU CN201720289421U CN206594052U CN 206594052 U CN206594052 U CN 206594052U CN 201720289421 U CN201720289421 U CN 201720289421U CN 206594052 U CN206594052 U CN 206594052U
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Abstract
The utility model discloses a kind of self-alignment gas-detecting device, with gas generating means, zero gas generating means and the sensing chamber for detecting gas；Gas generating means and zero gas generating means are connected by air way switch valve and the air inlet path of sensing chamber；Treat that test sample gas, through sample gas inlet to be measured, is detected into sensing chamber；During zero point correction, air way switch valve connects zero gas generating means and the air inlet path of sensing chamber, and outside air enters zero gas generating means I via air inlet I and produces zero gas, and zero gas enters sensing chamber and carries out zero point correction；When punctuate is calibrated, air way switch valve connects gas generating means and the air inlet path of sensing chamber, and gas generating means produces certain density calibrating gas, and punctuate calibration is carried out into sensing chamber.Intelligent, automation mechanized operation can be accomplished using the device, the technical merit requirement to operating personnel is significantly reduced, use cost is low, simple to operate, easy to maintenance.
Description
Technical field
The utility model is related to gas detection and analysis field, and in particular to a kind of self-alignment gas-detecting device.
Background technology
Gas analyzer has various errors and drift as one kind of analytical instrument, and according to the metrological legislation amount of having
, it is necessary to be equipped with the calibrator (-ter) unit and device of complexity the need for value is traced to the source, moreover, with the development of modern detecting, instrument
Structure is more and more accurate, and operation and maintenance also becomes increasingly complex, and generally requires the Operation and Maintenance personnel of specialty, especially online point
Analyzer device and when needing to be detected at the scene, its cost is high, and volume and weight is big, in-convenience in use defect especially protrude,
Moreover, the economy of China various regions and the gap of scientific and technological level are very big, many grass-roots units often have no idea to be equipped with the behaviour of specialty
Make personnel, severely impacted the using effect of instrument, also have impact on effective development of the work such as scientific research, production, environmental protection.And I
All realized, with the development of modern electronic technology, warp-wise has been intelligent for ordinary electronic class product, automation and fool
Change operation direction to develop, the general public is the electronic product that can be used function complicated, professional assay detection originally
Various gas analyzers should also develop to this direction.
The content of the invention
The purpose of this utility model is to test and analyze device by providing a kind of self-alignment multicomponent gas so that using should
The gas analyzer of device can accomplish intelligent, automation and fool operation, significantly reduce the skill to operating personnel
Art level requirement, use cost is low, simple to operate, easy to maintenance, is particularly suitable for various in-line analyzers and portable gas
Analyzer, considerably reduces real work amount, and cost is low, and cost effectiveness is high.
The technical solution adopted in the utility model is：
A kind of self-alignment gas-detecting device, with gas generating means, zero gas generating means and for detecting gas
Sensing chamber；Gas generating means and zero gas generating means are connected by air way switch valve and the air inlet path of sensing chamber；
During detection, treat that test sample gas, through sample gas inlet to be measured, is detected into sensing chamber, and filled by flow detection with control
I control gas flow is put, the gas into sensing chamber is discharged after the filtering of waste gas filter I by gas outlet I；
During zero point correction, air way switch valve connects the air inlet path of zero gas generating means and sensing chamber, and outside air is via entering
Gas port I enters zero gas generating means I and produces zero gas, and zero gas enters sensing chamber and carries out zero point correction；
When punctuate is calibrated, air way switch valve connects gas generating means and the air inlet path of sensing chamber, and gas generating means exists
Produced under temperature/humidity/pressure/voltage/light intensity and the measurement of other necessary conditions and the control of control device certain density
Calibrating gas, punctuate calibration is carried out into sensing chamber.
Described gas-detecting device, the sensing chamber has detector and the signal processing apparatus and optical treatment of correlation
Device, the detector and correlation signal processing device be set to directly/indirectly generation electric signal detector, the detector bag
Include correlation it is filtered, gathered, is amplified and other necessary processing after output signal device；The optical processing system
The device that including but not limited to light generation, optical filtering, light splitting, convergence, refraction, reflection, interference, diffraction are handled.
Described gas-detecting device, the sensing chamber with several serial or parallel connections；Filled with several gases
Put and zero gas generating means；Gas generating means and zero gas generating means pass through many vent passage switching valves and the air inlet path of sensing chamber
Connection.
Described gas-detecting device, the zero gas generating means includes but is not limited to carry out gas heat resolve, urged
Change conversion, oxidation, physical absorption, chemisorbed, selective absorption, selective filter, removal moisture solution, do not contained with producing
Zero gas of component to be measured, zero gas enters sensing chamber by air way switch valve, carries out zero point correction.
Described gas-detecting device, the gas generating means includes gas generating means I and gas generating means II；
The zero gas generating means includes zero gas generating means I and zero gas generating means II；
The gas generating means I, is that outside air enters zero gas generating means I through air inlet I and produced without to be measured
Zero gas of component, zero gas, zero gas temperature/humidity/pressure/voltage/light intensity and other necessary bars in gas generating means I
Under the measurement of part and the control of control device I progress ionize/illumination or other processing after produce certain density calibrating gas, should
Calibrating gas enters the sensing chamber by air way switch valve；
The gas generating means II, is the built-in osmos tube that one or more contains component to be measured, in temperature/wet
Under degree/pressure/voltage/light intensity and the measurement of other necessary conditions and the control of control device II, component to be measured is with certain speed
Rate is infiltrated from osmos tube, and outside air is inhaled into zero gas generating means II through air inlet II, removes to be measured group therein
Enter generation after gas generating means II, the certain density component to be measured that dilution gas generating means II is produced after point certain dense
The calibrating gas of degree, the calibrating gas enters the sensing chamber by air way switch valve.
Flow measurement and control device are additionally provided with described gas-detecting device, the gas circuit of the gas generating means II
Ⅱ。
Waste gas filter III is additionally provided with described gas-detecting device, the gas circuit of the gas generating means, works as institute
State air way switch valve and be switched to the gas circuit of gas generating means and when the gas circuit of sensing chamber is connected, or connect but there is unnecessary mark
During quasi- gas, the calibrating gas of access failure and unnecessary calibrating gas are filtered by waste gas filter III, remove calibrating gas
In pernicious gas composition after discharged by gas outlet III.
Described gas-detecting device, it is described treat test sample gas under the control of vavuum pump through sample gas inlet to be measured to be blown into or
The intake method of suction enters sensing chamber.
The utility model has the advantages that：
A kind of self-alignment gas detection and analysis device of the utility model includes air inlet, three-way switch valve, sensing chamber, light
Learn processing unit, detector and correlation signal processing apparatus, waste gas filter, flow detection and control device, vavuum pump,
Measuring and controlling, the zero gas generating means such as gas outlet, gas generating means, temperature/humidity/pressure/voltage/light intensity etc..
The utility model automatically and continuously can use one or more methods to dividing according to the different qualities of under test gas
Analyzer device carries out self calibration so that instrument can accomplish intelligent, automatic operating, fool operation, automatically using a variety of sides
Multiple components in method monitoring gas, it is very big to reduce Instrument purchase cost, workload is alleviated, is the neck such as scientific research, environmental protection
The application in domain provides scientific and rational device.
The utility model core is the self-calibration function for providing gas analysis instrument so that instrument can be accomplished automatically
Operation, and the detection part of instrument can be individually or comprehensive using absorption spectrometry, fluorescent spectrometry, change according to detection gaseous species
Learn luminescence method, electrochemical process, PID methods or other detection methods.During detection, sample gas is sucked by vavuum pump, passes through flow measurement control
Device processed with certain flow by three-way switch valve enter in sensing chamber, the sensing chamber have directly/produce telecommunications indirectly
Number detector, can also have optical processing system in sensing chamber, including but not limited to light and light be filtered, divided
The processing units such as light, convergence, refraction, reflection, interference, diffraction, the signal of above-mentioned detector after filtering, collection, amplification and its
Exported after its necessary processing, obtain the concentration of component to be measured；When carrying out zero point correction to device, air is filled by zero gas
Removal component to be measured therein is postponed, as zero gas for not containing component to be measured, sensing chamber and school are entered by three-way switch valve
The zero point of equipment, zero described gas generating means includes but is not limited to heat resolve, catalyzed conversion, oxidation, physical absorption, change
Learn absorption, selective absorption, selective filter, go moisture removal etc. reason mode；When carrying out school timestamp to instrument, gas is filled
Put the measurement control of the necessary condition including temperature/humidity/pressure/voltage/light intensity and other generation finite concentration under test gas
Device processed, has two kinds of typical ways to produce the gas containing certain density component to be measured, and a kind of mode is described zero gas hair
Zero gas that generating apparatus is produced is produced certain density under test gas after gas generating means ionization/illumination or other processing, is passed through
Cross three-way switch valve and school mark is carried out to device into sensing chamber；Another mode, which is that gas generating means is built-in, contains to be measured group
The osmos tube divided, component to be measured is come out with certain rate penetration, certain density by being produced after the zero gas dilution of certain flow
Calibrating gas, is calibrated by three-way switch valve into sensing chamber；When three-way switch valve does not switch to the gas of connection sensing chamber
Produced gas during road, or the unnecessary gas of school timestamp are filtered by a filter, remove pernicious gas therein into
Discharged after point；Multiple gases can be detected using a variety of methods using the present apparatus, and carry calibration function, greatly reduced
Real work amount, reduces job costs, improves operating efficiency.
Brief description of the drawings
Fig. 1 is the schematic diagram of gas-detecting device in embodiment 1.
Fig. 2 is the schematic diagram of gas-detecting device in embodiment 1.
Fig. 3 is the schematic diagram of gas-detecting device in embodiment 1.
Fig. 4 is the schematic diagram of gas-detecting device in embodiment 1.
Embodiment
A kind of self-alignment gas-detecting device, with treating test sample gas air inlet 1.1, air inlet I 1.2 and II 1.3, threeway
The signal processing apparatus I 5 of switching valve I 2.1 and II 2.2, sensing chamber I 3, optical processing system I 4, detector and correlation, waste gas mistake
Filter device I 6.1 and III 6.2, flow measurement and control device I 7.1 and II 7.2, vavuum pump I 8.1 and III 8.2, gas outlet I 9.1
With III 9.2, gas generating means I 10.1 and II 10.2, the survey of temperature/humidity/pressure/voltage/light intensity and other necessary conditions
Amount and control device I 11.1 and II 11.2, zero gas generating means I 12.1 and II12.2；It is above-mentioned each in the gas-detecting device
Part can have one or more quantity according to actual needs.For example, shown in Fig. 1 and 2, being connected with sensing chamber I 3
Or sensing chamber II3 ＇, the vavuum pump II8.1 ＇ supporting with sensing chamber II3 ＇, gas outlet II9.1 ＇, optical processing system in parallel
The ＇ of signal processing apparatus II 5 of II4 ＇, detector and correlation, the ＇ of waste gas filter II 6.1 etc..
Gas detection section point includes sensing chamber, optical processing system, detector and related signal processing apparatus, waste gas mistake
Filter device, flow measurement and control device and vavuum pump.Wherein, detector and the signal processing apparatus I 5 (II 5 ＇) of correlation have
Directly/produce the detector of electric signal indirectly, the detector have it is related it is filtered, gathered, is amplified and it is other must
The device of output signal after handling.Optical processing system I 4 (II 4 ＇), is provided with or without, it includes but not limited as needed
In the device of the processing such as light generation, optical filtering, light splitting, convergence, refraction, reflection, interference, diffraction；Under test gas is through treating test sample gas
Air inlet 1.1 is entered in sensing chamber of institute I 3 by vavuum pump I 8.1 by the collection of three-way switch valve I 2.1, by flow measurement and control
Device I 7.1 controls its flow；Sensing chamber I 3 detect after gas, by after waste gas filter I 6.1 by the row of gas outlet I 9.1
Go out；Flow measurement and control device I 7.1 can be arranged on any position in above-mentioned gas circuit according to actual needs；According to being intended to examine
The species of gas is surveyed, the intake method of the ＇ of sensing chamber II 3 can be also used；When needing to detect multiple gases, and/or with a variety of
When mode is detected to gas, the gas circuit serial or parallel connection of sensing chamber two or more described I 3 can be used, or it is logical
The more sensing chamber I 3 of more gas path control valve gate controls are crossed to use successively.
The zero gas generating means I 12.1 and II12.2, include but is not limited to carry out gas heat resolve, catalysis turn
Change, oxidation, physical absorption, chemisorbed, selective absorption, selective filter, moisture removal etc. is gone to manage, to produce without needing
Zero gas of component is surveyed, zero gas enters the sensing chamber I 3 by the three-way switch valve II2.2 and I 2.1；
The gas generating means I 10.1 and II10.2, including the temperature/humidity/pressure/voltage/light intensity and other
The measurement of necessary condition and control device I 11.1 and II11.2, are two kinds of typical structures for producing gas, can be according to actual inspection
Surveying gaseous species uses one of which or two kinds of structures, or multiple one or two kinds of structures to be used in conjunction with；The gas is filled
I 10.1 are put, is that outside air enters zero gas generating means I 12.1 by the air inlet I 1.2 and produced without component to be measured
Zero gas, zero gas ionized by the gas generating means I 10.1/illumination or other processing after produce certain density Standard Gases
Body, the calibrating gas enters the sensing chamber I 3 by the three-way switch valve II2.2 and I 2.1；When device is only with one
During gas generating means I 10.1, three-way switch valve II2.2 can be omitted；The gas generating means II10.2, built-in one or two
Contain the osmos tube of component to be measured more than individual, in the measurement and control of temperature/humidity/pressure/voltage/light intensity and other necessary conditions
Under device II11.2 processed control, component to be measured is infiltrated with certain speed from osmos tube, and outside air is by described
Air inlet II1.3 sucks zero gas generating means II 12.2 by vavuum pump III 8.2, removes and enters gas hair after component to be measured therein
Certain density mark is produced after generating apparatus II10.2, the certain density component to be measured that dilution gas generating means II 10.2 is produced
Quasi- gas, enters the sensing chamber I 3, the flow of this process is by the flow measurement by three-way switch valve II 2.2 and I 2.1
Controlled with control device II 7.2, the flow measurement and control device II 7.2 can be arranged on above-mentioned gas circuit according to actual needs
In any position；When three-way switch valve II 2.2 does not switch to the gas circuit for connecting sensing chamber I 3, although or connecting in the presence of many
During remaining calibrating gas, above-mentioned standard gas is filtered by filter III 6.2, is passed through after removing pernicious gas composition therein
Discharge the gas outlet III 9.3.
Sensing chamber I 3 can unrestrictedly increase according to actual needs.The three-way switch valve I 2.1 and II 2.2 can also be used
The multi direction changeover valve of multiple gas circuits can be controlled to substitute, or control by using on-off valve to treat test sample gas/zero gas/gas
Into the gas circuit of the sensing chamber I 3.The vavuum pump I 8.1 and III 8.2 can be replaced using the vavuum pump of many pump heads, or according to
It is actually needed using more vavuum pumps.
A kind of self-alignment gas-detecting device of embodiment 1
As shown in figure 1, for convenience, the present embodiment is only in parallel with a sensing chamber I 3, a ＇ gas circuit of sensing chamber II 3
Mode and two different types of each one of gas generating means I 10.1 and II 10.2 exemplified by.Wherein sensing chamber I 3 is handle
The intake method of under test gas suction, the ＇ of sensing chamber II 3 is the intake method that under test gas is blown into, gas generating means I 10.1
It is that zero gas is handled by ionization/illumination or other manner to produce gas, gas generating means II 10.2 is built-in
The certain density component to be measured infiltrated in osmos tube is diluted to produce gas, actually each sensing chamber, gas hair
Generating apparatus can unrestrictedly increase as needed.
During detection, three-way switch valve I 2.1 is connected with sample gas inlet 1.1 to be measured, and ＇, vavuum pump I 8.1 and II 8.1 treats test sample
Qi leel is not gathered to be detected into the ＇ of sensing chamber I 3 and II 3, is controlled respectively with the ＇ of control device I 7.1 and II 7.1 by flow detection
Its flow；Gas into sensing chamber I 3 is discharged after the filtering of waste gas filter I 6.1 by gas outlet I 9.1, into detection
The ＇ of room II 3 gas is discharged after the ＇ of waste gas filter II 6.1 filtering by the ＇ of gas outlet II 9.1.
When carrying out zero point correction, three-way switch valve I 2.1 and II 2.2 is connected, and three-way switch valve II 2.2 is filled with gas
I 10.1 connections are put, now, the gas generating means I 10.1 in gas circuit does not work, and outside air enters via air inlet I 1.2
Enter zero gas generating means I 12.1 and produce zero gas, zero gas enters the ＇ of sensing chamber I 3 and II 3 and carries out zero point correction.
Gas generating means II 10.2 is constantly in working condition, temperature/humidity/pressure/voltage/light intensity and it is other must
Want under the measurement of condition and the control of control device 11.2, the built-in osmos tube in gas generating means II 10.2 produces certain dense
The gas of degreeⅠ, vavuum pump III 8.2 is by air inlet II 1.3 outside air zero gas generating means II 12.2 of suction and generation zero
Gas, its flow is controlled by flow measurement and control device III 7.2, and zero gas enters II 10.2 pairs of gases of gas generating meansⅠCarry out
After dilution, certain density gas is produced, when II 2.2 access failure of three-way switch valve, the gas is via waste gas filter III
Discharged after 6.2 filterings by gas outlet III 9.2.
When carrying out punctuate calibration, three-way switch valve I 2.1 and II 2.2 is connected, and is determined according to the gaseous species to be calibrated
Which calibrated using the gas of gas generating means；When three-way switch valve II 2.2 and gas generating means I 10.1 are connected
When, gas generating means I 10.1 works, in the measurement and control of temperature/humidity/pressure/voltage/light intensity and other necessary conditions
Certain density gas is produced under the control of device I 11.1, punctuate calibration is carried out into sensing chamber I 3 or II3 ＇；When threeway switching
When valve II 2.2 is connected with gas generating means II 10.2, the gas that gas generating means II 10.2 is produced enters the He of sensing chamber I 3
II 3 ＇ carry out school mark, and unnecessary gas is discharged after being filtered via waste gas filter III 6.2 by gas outlet III 9.2.
A kind of self-alignment gas-detecting device of embodiment 2
As shown in Fig. 2 for convenience, the present embodiment is only connected with a sensing chamber I 3, a ＇ gas circuit of sensing chamber II 3
Mode and two different types of each one of gas generating means I 10.1 and II10.2 exemplified by, wherein sensing chamber I 3 be handle
The intake method of under test gas suction, sensing chamber II3 ＇ are the intake method that under test gas is blown into, gas generating means I 10.1
By the way that zero gas is handled by ionization/illumination or other manner to produce gas, gas generating means II10.2 passes through handle
The certain density component to be measured infiltrated in built-in osmos tube is diluted to produce gas, actually each sensing chamber, mark
Gas generating means can unrestrictedly increase as needed.
During detection, three-way switch valve I 2.1 is connected with sample gas inlet 1.1 to be measured, and I 8.1, vavuum pump treats that test sample aspiration enters inspection
Survey room I 3 to be detected, its flow is controlled by flow detection and control device I 7.1；Gas into sensing chamber I 3 passes through waste gas
Filter I 6.1 enters back into the ＇ of sensing chamber II 3 after filtering and detected, the gas after detection passes through the ＇ of waste gas filter II 6.1
Filtering after by gas outlet I 9.1 discharge；According to the species of detected gas, waste gas filter I 6.1 can be cancelled.
When carrying out zero point correction, three-way switch valve I 2.1 is connected with gas generating means I 10.1, now, in gas circuit
Gas generating means I 10.1 do not work, outside air via air inlet I 1.2 enter zero gas generating means I 12.1 produce zero
Gas, zero gas enters the ＇ of sensing chamber I 3 and II 3 and carries out zero point correction.
Gas generating means II 10.2 is constantly in working condition, temperature/humidity/pressure/voltage/light intensity and it is other must
Want under the measurement of condition and the control of control device II 11.2, the built-in osmos tube in gas generating means II 10.2 produces certain
The gas of concentrationⅠ, vavuum pump III 8.2 is by the way that air intake II 1.3 is outside air zero gas generating means II 12.2 of suction and produces
Zero gas, its flow is controlled by flow measurement and control device II7.2, and zero gas enters gas generating means II10.2 to gasⅠEnter
Row dilution, produces certain density gas, when II 2.2 access failure of three-way switch valve, the gas is via waste gas filter III
Discharged after 6.2 filterings by gas outlet III 9.2.
When carrying out punctuate calibration, three-way switch valve I 2.1 and II2.2 is connected, and is determined according to the gaseous species to be calibrated
Which calibrated using the gas of gas generating means；When three-way switch valve II 2.2 and gas generating means I 10.1 are connected
When, gas generating means I 10.1 works, in the measurement and control of temperature/humidity/pressure/voltage/light intensity and other necessary conditions
Certain density gas is produced under the control of device I 11.1, punctuate calibration is carried out into the ＇ of sensing chamber I 3 or II 3；When threeway switching
When valve II 2.2 is connected with gas generating means II 10.2, the gas that gas generating means II 10.2 is produced enters the He of sensing chamber I 3
II 3 ＇ carry out school mark, and unnecessary gas is discharged after being filtered via waste gas filter III 6.2 by gas outlet III 9.2.
A kind of self-alignment gas-detecting device of embodiment 3
As shown in figure 3, for convenience, the present embodiment is only with a sensing chamber I 3 for sucking intake method and a gas
Exemplified by generating means I 10.1, the intake method of the ＇ of sensing chamber II 3 air blowing, and each sensing chamber, gas hair actually can be also used
Generating apparatus can unrestrictedly increase as needed.
During detection, three-way switch valve I 2.1 is connected with sample gas inlet 1.1 to be measured, and I 8.1, vavuum pump treats that test sample aspiration enters inspection
Survey room I 3 to be detected, its flow is controlled by flow detection and control device I 7.1；Gas into sensing chamber I 3 passes through waste gas
Filter I 6.1 is discharged after filtering by gas outlet I 9.1.
When carrying out zero point correction, three-way switch valve I 2.1 is connected with gas generating means I 10.1, now, in gas circuit
Gas generating means I 10.1 do not work, outside air via air inlet I 1.2 enter zero gas generating means I 12.1 produce zero
Gas, zero gas enters sensing chamber I 3 and carries out zero point correction.
When carrying out punctuate calibration, three-way switch valve I 2.1 is connected with gas generating means I 10.1, gas generating means I
10.1 work, in the measurement and the control of control device I 11.1 of temperature/humidity/pressure/voltage/light intensity and other necessary conditions
It is lower to produce certain density gas, carry out punctuate calibration into sensing chamber I 3.
A kind of self-alignment gas-detecting device of embodiment 4
As shown in figure 4, for convenience, the present embodiment is only with a sensing chamber 3 for sucking intake method and a gas
Exemplified by generating means II 10.2, the intake method of the ＇ of sensing chamber II 3 air blowing, and each sensing chamber, gas hair actually can be also used
Generating apparatus can unrestrictedly increase as needed.
During detection, three-way switch valve I 2.1 is connected with sample gas inlet 1.1 to be measured, and I 8.1, vavuum pump treats that test sample aspiration enters inspection
Survey room I 3 to be detected, its flow is controlled by flow detection and control device I 7.1；Gas into sensing chamber I 3 passes through waste gas
Filter I 6.1 is discharged after filtering by gas outlet I 9.1.
When carrying out zero point correction, three-way switch valve I 2.1 and II 2.2 is connected, and three-way switch valve II 2.2 is filled with zero gas
I 12.1 connections are put, outside air enters zero gas generating means I 12.1 via air inlet I 1.2 and produces zero gas, and zero gas enters detection
Room I 3 carries out zero point correction.
Gas generating means II10.2 is constantly in working condition, temperature/humidity/pressure/voltage/light intensity and it is other must
Want under the measurement of condition and control device II11.2 control, the built-in osmos tube in gas generating means II10.2 produces certain
The gas of concentrationⅠ, vavuum pump III 8.2 by air intake outside air suck zero gas generating means II12.2 and produce zero gas,
Its flow is controlled by flow measurement and control device II7.2, zero gas enters gas generating means II10.2 to gasⅠCarry out dilute
Release, produce certain density gas, when three-way switch valve II2.2 access failures, gas is filtered via waste gas filter III 6.2
Discharged afterwards by gas outlet III 9.2.
When carrying out punctuate calibration, three-way switch valve I 2.1 and II 2.2 is connected, and three-way switch valve II 2.2 is filled with gas
II 10.2 connections are put, the gas that now gas generating means II 10.2 is produced, which enters, carries out school mark, unnecessary mark in sensing chamber I 3
Gas is discharged after being filtered via waste gas filter III 6.2 by gas outlet III 9.2.
Above-described is only preferred embodiment of the present utility model.It should be pointed out that for the ordinary skill people of this area
For member, on the premise of the utility model principle is not departed from, some variations and modifications can also be made, for example (including but not
It is limited to), the gas that can be detected with the present apparatus is converted into by increasing converter certain gas to measure the gas indirectly
Concentration, or increase detection method and content, such as particulate matter by increasing other detection means on the basis of the present invention
Detection means, etc., also should be regarded as belonging to protection domain of the present utility model.
Claims (8)
1. a kind of self-alignment gas-detecting device, it is characterised in that with gas generating means, zero gas generating means and it is used for
Detect the sensing chamber of gas；Gas generating means and zero gas generating means are connected by air way switch valve and the air inlet path of sensing chamber
Connect；
During detection, treat that test sample gas, through sample gas inlet to be measured, is detected into sensing chamber, and by flow detection and control device I
Gas flow is controlled, the gas into sensing chamber is discharged after the filtering of waste gas filter I by gas outlet I；
During zero point correction, air way switch valve connects zero gas generating means and the air inlet path of sensing chamber, and outside air is via air inlet I
Zero gas is produced into zero gas generating means I, zero gas enters sensing chamber and carries out zero point correction；
When punctuate is calibrated, air way switch valve connects the air inlet path of gas generating means and sensing chamber, gas generating means temperature/
Certain density calibrating gas is produced under humidity/pressure/measurement of voltage/light intensity and the control of control device, into sensing chamber
Carry out punctuate calibration.
2. gas-detecting device as claimed in claim 1, it is characterised in that the sensing chamber has the letter of detector and correlation
The signal processing device of number processing unit and optical processing system, the detector and correlation be set to directly/produce electric signal indirectly
Detector, the detector include it is related it is filtered, gathered, amplify after output signal device；The optics
Processing unit includes but is not limited to light generation, optical filtering, light splitting, convergence, refraction, reflection, interference, the device of diffraction processing.
3. gas-detecting device as claimed in claim 1, it is characterised in that the sensing chamber with several serial or parallel connections；
With several gas generating means and zero gas generating means；Gas generating means and zero gas generating means are cut by many vent passages
The air inlet path for changing valve and sensing chamber is connected.
4. gas-detecting device as claimed in claim 1, it is characterised in that the zero gas generating means includes but is not limited to pair
Gas carry out heat resolve, catalyzed conversion, oxidation, physical absorption, chemisorbed, selective absorption, selective filter, go water removal
Office is managed, to produce zero gas for not containing component to be measured, and zero gas enters sensing chamber by air way switch valve, carries out zero point school
It is accurate.
5. gas-detecting device as claimed in claim 1, it is characterised in that the gas generating means is filled including gas
Put I and gas generating means II；The zero gas generating means includes zero gas generating means I and zero gas generating means II；
The gas generating means I, is that outside air enters zero gas generating means I through air inlet I and produced without component to be measured
Zero gas, the control of zero gas measurement of temperature/humidity/pressure/voltage/light intensity and control device I in gas generating means I
It is lower progress ionize/illumination after produce certain density calibrating gas, the calibrating gas by air way switch valve enter the detection
Room；
The gas generating means II, is the built-in osmos tube that one or more contains component to be measured, temperature/humidity/
Under the measurement of pressure/voltage/light intensity and the control of control device II, component to be measured is penetrated with certain speed from osmos tube
Come, outside air is inhaled into zero gas generating means II through air inlet II, filled after removing component to be measured therein into gas
Certain density calibrating gas is produced after putting II, the certain density component to be measured that dilution gas generating means II is produced, the mark
Quasi- gas enters the sensing chamber by air way switch valve.
6. gas-detecting device as claimed in claim 5, it is characterised in that also set in the gas circuit of the gas generating means II
There are flow measurement and control device II.
7. gas-detecting device as claimed in claim 1, it is characterised in that be additionally provided with the gas circuit of the gas generating means
Waste gas filter III, when the air way switch valve is switched to the gas circuit of gas generating means and the gas circuit of sensing chamber is connected,
Or when connecting but there is unnecessary calibrating gas, the calibrating gas of access failure and unnecessary calibrating gas are by waste gas filter III
Filtered, discharged after removing the pernicious gas composition in calibrating gas by gas outlet III.
8. gas-detecting device as claimed in claim 1, it is characterised in that described to treat that test sample gas is passed through under the control of vavuum pump
Sample gas inlet to be measured enters sensing chamber with the intake method for being blown into or sucking.
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