CN108037217A - A kind of Portable exhaust gas analyzer and its operating method - Google Patents
A kind of Portable exhaust gas analyzer and its operating method Download PDFInfo
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- CN108037217A CN108037217A CN201810041994.XA CN201810041994A CN108037217A CN 108037217 A CN108037217 A CN 108037217A CN 201810041994 A CN201810041994 A CN 201810041994A CN 108037217 A CN108037217 A CN 108037217A
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- 238000011017 operating method Methods 0.000 title claims abstract description 13
- 239000007789 gas Substances 0.000 claims abstract description 237
- 238000001514 detection method Methods 0.000 claims abstract description 65
- 239000012159 carrier gas Substances 0.000 claims abstract description 61
- 238000005070 sampling Methods 0.000 claims abstract description 39
- 238000000926 separation method Methods 0.000 claims abstract description 31
- 238000012545 processing Methods 0.000 claims abstract description 15
- 238000004868 gas analysis Methods 0.000 claims abstract description 14
- 229910000831 Steel Inorganic materials 0.000 claims description 21
- 238000004458 analytical method Methods 0.000 claims description 21
- 239000010959 steel Substances 0.000 claims description 21
- 238000012360 testing method Methods 0.000 claims description 19
- 238000000034 method Methods 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 8
- 239000004615 ingredient Substances 0.000 claims description 4
- 238000002360 preparation method Methods 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 claims description 2
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- 238000010276 construction Methods 0.000 abstract description 6
- 238000010586 diagram Methods 0.000 description 6
- 238000004140 cleaning Methods 0.000 description 5
- 230000007246 mechanism Effects 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 238000004587 chromatography analysis Methods 0.000 description 4
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 241000894007 species Species 0.000 description 3
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- 230000002045 lasting effect Effects 0.000 description 2
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- 230000007704 transition Effects 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- 241001269238 Data Species 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- -1 arene compound Chemical class 0.000 description 1
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- 238000006243 chemical reaction Methods 0.000 description 1
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- 238000013480 data collection Methods 0.000 description 1
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- 239000003599 detergent Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 238000013507 mapping Methods 0.000 description 1
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- 230000004048 modification Effects 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
- G01N30/26—Conditioning of the fluid carrier; Flow patterns
- G01N30/38—Flow patterns
- G01N30/46—Flow patterns using more than one column
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Abstract
The present invention proposes a kind of Portable exhaust gas analyzer, including babinet, and babinet is provided with gas sampling unit, and the babinet is internally provided with gas separation unit, detection unit, data acquisition and processing unit, control unit and carrier gas unit and calibration unit；Wherein, the gas separation unit is arranged in an independent separator box, and the separator box is provided with its three internal air inlet pipe of connection and three exhaust pipes.In addition, the operating method present invention also offers above-mentioned Portable exhaust gas analyzer.The Portable exhaust gas analyzer of the present invention provides the overall structure being integrated in built in whole in babinet, easy to carry and transport, and the emergent gas analysis suitable for various wild environments detects.The gas separation unit of absolute construction can conveniently form the highly integrated gas analyzer conveniently exchanged, reduce the quantity of connecting pipe and the quantity of control valve, can effectively reduce systematic error, improve the reliability and accuracy of detection of system.
Description
Technical field
Gas detection and analytical technology the present invention relates to field of environment protection, it is especially a kind of to can be used for analyzing gas componant
Analyzer, particularly a kind of Portable exhaust gas analyzer and its operating method.
Background technology
Field of environment protection is frequently necessary to be detected analysis to various gases, and what is be typically used for is gas chromatograph.Gas phase color
Spectrometer is the device that biased sample is carried out to analysis detection, generally includes air-channel system, sampling system, piece-rate system, circuit control
System processed, detecting system, data acquisition and processing system etc..But existing gas chromatograph is generally all installed on laboratory
Interior, overall volume is very huge, and connection complicated airflow line and various power supplies and control line are needed between each system
Cable etc., the connection reliability of whole device is highly unstable, varies slightly, with regard to needing to reexamine calibration, being substantially absent from
The possibility that can be convenient for carrying.
106841483 A of CN disclose a kind of chromatography column feed materials separator, it is joined by an eight ways valve and ten-way valve
With to improve analysis efficiency.But two sleeving valves used have been only the time utilization gas circuits of half of half, two sets of gas
The mutual simultaneously onrelevant in road.The result is that the difference of two sets of gas circuits is easy to bring systematic error, such as two quantity tubes necessarily to deposit
In volume difference, thus there are unavoidable systematic error.And more gas path pipes need substantial amounts of connecting pipe, pipeline
More, the error that gas circuit volume is brought is bigger, and pipeline material is bigger to the Adsorption Effect of component in gas.In addition, pipeline is more,
The time of the easier generation connecting fault of connector, calibration and investigation failure greatly increases, the reliability of system thus can be deteriorated.And
The problem of use of two sleeving valves brings synchronism, the control conversion of system is complicated, the volume that two sleeving valves take also bigger, it is difficult to
For portable emergency sampling analysis.
104374860 A of CN disclose a kind of Portable exhaust gas analyzer, and which employs an independent ten-way valve to coordinate two
A chromatographic column carries out separation post analysis to gas.But the introduction of the general frame of the Portable exhaust gas analyzer of the prior art
It is very simple and crude, it is merely illustrative including babinet, babinet is interior to set automatic sampling sample introduction mechanism, sample gas separating mechanism and chromatography detection machine
Structure, automatic sampling sample introduction mechanism include ten-way valve, sampling ring, and mixed gas separating mechanism mainly includes rough segmentation chromatographic column, subdivision
The pipeline and heat-preservation cotton of chromatographic column and auxiliary, mixed gas testing agency mainly include fuel cell and the pipeline of auxiliary.As for
The conveying of gas, the calibration of equipment, the control of equipment etc. can not be imagined without any explanation, those skilled in the art
The overall structure of the Portable exhaust gas analyzer of the prior art.In addition, the prior art is using side associated with two chromatographic columns
Formula carries out the separation of gas, goes deimpurity influence by way of series connection, and two chromatographic columns keep continuation series connection during use,
One state sampling plus detergent line, a state sample introduction analysis.But double chromatographic columns of the prior art are to continue series connection to make
With, can only according to the protrusion target zone species of two pillar selectivity, so as to ignore remaining section, but the prior art without
Method removes interfering material, and the peak type of the different components in minimum gas can not be pulled open to amplification, the peak type of the species of target zone
Subdivision is inadequate, and precision of analysis need to be improved.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of Portable exhaust gas analyzer and its operating method, to reduce or
Avoid the problem that being formerly mentioned.
Specifically, the present invention provides a kind of Portable exhaust gas analyzer, it can effectively reduce systematic error, improve
System reliability and accuracy of detection, and can be more practical and portable.
In order to solve the above technical problems, the present invention proposes a kind of Portable exhaust gas analyzer, including babinet, the babinet
Gas sampling unit is provided with, the babinet is internally provided with gas separation unit, detection unit, data acquisition and processing list
Member, control unit and carrier gas unit and calibration unit；Wherein, the gas separation unit is arranged on an independent separator box
In, the separator box is provided with its three internal air inlet pipe of connection and three exhaust pipes.
Preferably, three air inlet pipe are respectively to connect the first air inlet pipe and the second air inlet pipe of the carrier gas unit,
And the 3rd air inlet pipe of the connection gas sampling unit and calibration unit.
Preferably, three exhaust pipes are respectively the downtake pipe and second exhaust pipe for being vented, and are connected
3rd exhaust pipe of the detection unit.
Preferably, the data acquisition and processing unit connect the detection unit by circuit, the data acquisition and
Processing unit has the display screen of display testing result and at least one data output interface.
Preferably, the carrier gas unit includes a carrier gas steel cylinder being built in the babinet, the carrier gas steel cylinder point
First via carrier gas and the second road-load gas are not provided by first air inlet pipe and the second air inlet pipe.
Preferably, the calibration unit includes a calibration steel cylinder and dynamic calibration instrument being built in the babinet, institute
State the 3rd air inlet pipe and the calibration steel cylinder and the dynamic calibration instrument are connected by triple valve, be provided with the 3rd air inlet pipe
Sampling pump.
Preferably, the gas separation unit includes a ten-way valve being arranged on inside the separator box, and described ten is logical
Valve has the first to the tenth connector according to adjoining position serial number；Wherein, first connector and the second row
Tracheae connects；Second connector is connected with the 9th connector by being provided with the pipeline of the first chromatographic column；Described 3rd connects
Interface is connected with the 3rd exhaust pipe, and the 3rd exhaust pipe is provided with positioned at the 3rd connector and the detection unit
Between the second chromatographic column；4th connector is connected with second air inlet pipe；5th connector and described first
Exhaust pipe connects；6th connector is connected with the 3rd air inlet pipe；7th connector passes through with the tenth connector
It is provided with the pipeline connection of quantity tube；8th connector is connected with first air inlet pipe.
In addition, present invention also offers a kind of operating method of above-mentioned Portable exhaust gas analyzer, the described method includes such as
Lower step：
The ten-way valve is adjusted to by first state by described control unit, in said first condition, described first
Connector is connected with the tenth connector, and second connector is connected with the 3rd connector, the 4th connector
Connected with the 5th connector, the 6th connector is connected with the 7th connector, the 8th connector with it is described
9th connector connects；
Start the sampling pump, sample gas is gathered by the gas sampling unit, the sample gas is persistently led to
Enter the 3rd air inlet pipe, enter the quantity tube subsequently into the 6th connector and from the 7th connector, from the quantity tube
The gas of outflow is emptied after entering the tenth connector and the first connector by the second exhaust pipe；
Meanwhile first air inlet pipe is passed through by the first via carrier gas that described control unit provides the carrier gas unit
The 8th connector and the 9th connector are continually fed into, then passes through first chromatographic column, from the first chromatographic column stream
The gas gone out enters after the second connector and the 3rd connector flows through second chromatographic column by the 3rd exhaust pipe, afterwards
Emptied after entering the detection unit from the gas of second chromatographic column outflow；
Meanwhile second air inlet pipe is passed through by the second road-load gas that described control unit provides the carrier gas unit
The 4th connector and the 5th connector are passed through, is then emptied by the downtake pipe.
Preferably, the operating method further comprises following steps：
The ten-way valve is adjusted to by the second state from first state by described control unit, in second state
Under, first connector is connected with second connector, and the 3rd connector is connected with the 4th connector, described
5th connector is connected with the 6th connector, and the 7th connector is connected with the 8th connector, and the described 9th connects
Interface is connected with the tenth connector；
By the sampling pump and the gas sampling unit, the sample gas of collection is continually fed into the 3rd air inlet
Pipe, empties subsequently into the 6th connector and the 5th connector and from the downtake pipe；
Meanwhile first air inlet pipe is passed through by the first via carrier gas that described control unit provides the carrier gas unit
The 8th connector and the 7th connector are continually fed into, it will be stored under the first state subsequently into the quantity tube
In sample gas release the quantity tube, sample gas flows into the tenth connector afterwards and the 9th connector enters described first
After chromatographic column, the gas ingredients first parsed in sample gas are directly emptied, and isolate back segment air reserve as gas to be measured
Body, from the gas first parsed of first chromatographic column outflow enter the second connector and the first connector after by described the
Emptied after two exhaust pipes；
Meanwhile second air inlet pipe is passed through by the second road-load gas that described control unit provides the carrier gas unit
The 4th connector and the 3rd connector are passed through, second chromatographic column is then flowed through by the 3rd exhaust pipe, afterwards
Emptied after entering the detection unit from the gas of second chromatographic column outflow.
Preferably, the operating method further comprises following steps：
The ten-way valve is adjusted to by the third state from the second state by described control unit, institute under the third state
It is identical with the first state to state the connection relation of ten-way valve, wherein, first connector is connected with the tenth connector,
Second connector is connected with the 3rd connector, and the 4th connector is connected with the 5th connector, and described
Six connectors are connected with the 7th connector, and the 8th connector is connected with the 9th connector；
By the sampling pump and the gas sampling unit, the sample gas of collection is continually fed into the 3rd air inlet
Pipe, enters the quantity tube subsequently into the 6th connector and from the 7th connector, enters from the gas of quantity tube outflow
Emptied after tenth connector and the first connector by the second exhaust pipe；It is with this that gas under second state is whole
Discharge, to store the sample gas for being used for analyzing in the quantity tube next time；
Meanwhile first air inlet pipe is passed through by the first via carrier gas that described control unit provides the carrier gas unit
The 8th connector and the 9th connector are continually fed into, then passes through first chromatographic column, from the first chromatographic column stream
The gas gone out releases the under test gas isolated under second state into after the second connector and the 3rd connector
Second chromatographic column is flowed through by the 3rd exhaust pipe, the composition under test gas is made with not by second chromatographic column
Parse and discharge with speed, emptied after entering detection unit detection from the gas of second chromatographic column outflow afterwards；With this
The circulation of a gas analysis is completed in a third condition；The analysis result that the detection unit obtains further is passed by circuit
It is defeated by the data acquisition and processing unit；
Meanwhile second air inlet pipe is passed through by the second road-load gas that described control unit provides the carrier gas unit
The 4th connector and the 5th connector are passed through, is then emptied by the downtake pipe；With this by second state
Under gas all discharge, and pipeline is cleaned by carrier gas, the gas analysis of preparation next time.
The Portable exhaust gas analyzer of the present invention provides the overall structure being integrated in built in whole in babinet, and each structure exists
It is stably connected with and is integrated in babinet, it is compact-sized, it is easy to carry and transport, suitable for the emergent gas analysis of various wild environments
Detection.And the gas separation unit of absolute construction can conveniently form the highly integrated gas analyzer conveniently exchanged, reduce
The quantity of connecting pipe and the quantity of control valve, so as to effectively reduce systematic error, improve the reliable of system
Property and accuracy of detection.In addition, the miscellaneous peak gas first parsed is vented by the gas separation unit of the present invention by the first chromatographic column,
Be conducive to the raising of gas accuracy of detection to be checked, pull open the corrugation pitch of each composition by the second chromatographic column afterwards, improve not
With the detection degree of composition especially microcomponent, accuracy of detection is improved.
Brief description of the drawings
The following drawings is only intended to, in doing schematic illustration and explanation to the present invention, not delimit the scope of the invention.Wherein,
The structure diagram of the Portable exhaust gas analyzer of a specific embodiment according to the present invention is shown in Fig. 1；
The connection structure that the Portable exhaust gas analyzer of another specific embodiment according to the present invention is shown in Fig. 2 is shown
It is intended to；
The gas separation that the Portable exhaust gas analyzer of another specific embodiment according to the present invention is shown in Fig. 3 is single
First and third state schematic diagram of member；
The second view of gas separation unit shown in Fig. 3 is shown in Fig. 4.
Embodiment
In order to which the technical features, objects and effects of the present invention are more clearly understood, now control illustrates this hair
Bright embodiment.Wherein, identical component uses identical label.
Just as described in the background section, due to existing gas analyzing apparatus, such as gas chromatograph etc., structure is multiple
Miscellaneous, connecting pipe and power supply and controlling cable etc. are very more, cause the stability of existing gas analyzing apparatus very poor, inconvenience
In carrying.Therefore, the present invention provides a kind of Portable exhaust gas analyzer, by simplifying structure, necessary structure is collected as far as possible
Into together, the number of the quantity of connecting pipe and control valve is reduced by reducing the number of components of piece-rate system as far as possible
Amount, so as to effectively reduce systematic error, improves the accuracy of detection of gas analyzer while reliability is improved, to obtain
A kind of more practical Portable exhaust gas analyzer.
Specifically referring to Fig. 1, the portable gas analysis of a specific embodiment according to the present invention is shown in it
The structure diagram of instrument, shows in figure, Portable exhaust gas analyzer of the invention includes babinet 100, and babinet 100 is provided with gas
Sample injection unit 11, babinet 100 be internally provided with gas separation unit 12, detection unit 13, data acquisition and processing unit 14,
Control unit 15 and carrier gas unit 16 and calibration unit 17；In addition, according to the needs of the pressure condition of sampling source of the gas, the present invention
Portable exhaust gas analyzer can also in babinet 100 the built-in sampling pump 18 that controlled by control unit 15.Outside babinet 100
Side may be provided for the binding post of circumscripted power line, or the binding post of external power supply is replaced with easy to connection vehicle mounted electric
The USB power supply connector (not shown)s in source, and a kind of alternative feasible program.Certainly, particularly compact portable
In structure, can also in babinet 100 internal battery as Emergent detection when use.
In addition, in the concrete structure of the present invention, as shown in Fig. 2, it is shown according to the present invention, another is specific
The attachment structure schematic diagram of the Portable exhaust gas analyzer of embodiment, referring to Fig. 1-2, is additionally provided with various connections in babinet 100
The structure such as data acquisition and processing unit 14, the cable of control unit 15, solenoid valve, it is corresponding to also have connection gas sampling unit
11st, the structure such as gas pipeline of gas separation unit 12, detection unit 13, carrier gas unit 16 and calibration unit 17.
In addition, being also built-in with the gas separation unit 12 of absolute construction in the Portable exhaust gas analyzer of the present invention, it sets
To put in an independent separator box 120, the separator box 120 is provided with three air inlet pipe 121,122 of its inside of connection,
123 and three exhaust pipes 124,125,126.That is, the gas separation unit 12 being arranged in babinet 100 has been designed to independent
Structure, only has the inside and outside pipeline of six connections in the outside of separator box 120, is three air inlet pipe 121,122,123 and three respectively
A exhaust pipe 124,125,126, and the separated gas phase separation of the gas for being internally integrated suitable particular category of separator box 120
Column, such as the separation detection for arene compound, can use such asMetal capillary column and BP-5 classes
The combining form of the gas phase splitter of type；Or the separation detection for halogenated compound, can use such as KB-VOC andThe combining form of the gas phase splitter of metal capillary column type.WhereinThe metal capillary column of series,
BP-5, KB-VOC are the model of the gas phase splitter of commercially available common type, its gas analysis performance can pass through various products hand
Volume inquiry obtains.In addition thermostatic control mechanism can also be further set in separator box 120, avoids indoor temperature fluctuation interference analysis knot
Fruit.
A kind of highly integrated gas analysis conveniently exchanged can be formed using the gas separation unit 12 of absolute construction
Instrument, that is, for different types of gas separation detection, can be with the knockout box 120 of prefabricated plurality of specifications, when needs pair
When the gas of certain classification is analyzed, it is possible to load the gas phase splitter of respective classes in babinet 100, it is only necessary to
A kind of gas of classification point corresponding can be formed with six pipelines of the internal pipeline connection knockout box 120 of babinet 100
Analyzer.In fact, in specific embodiment shown in Fig. 2, six pipelines of knockout box 120 have two rows empty in fact
Exhaust pipe 124 and 126 be it is in line go out babinet 100 outside, that is, the two pipelines 124 and 126 are integrated in gas point
From on case 120, any connector can be completely dispensed with when loading babinet 100, therefore replace a kind of knockout box 120
Four pipe joints are needed just to complete.
It is corresponding, in the suitable position of babinet 100, the air inlet pipe of gas sampling unit 11 can be set and for three rows
The passage that tracheae 124,125,126 is vented.In addition, according to the concrete condition of sample gas, can be in gas for ease of gas analysis
The transition joint 111 for being used for tentatively dehumidifying with dedusting is set in the air inlet pipe of body sample injection unit 11；Certainly, dried in source of the gas dustless
Environment can not also use transition joint 111, directly gas is filtered as the dedusting structure built in gas sampling unit 11.
That is, as can be seen that the Portable exhaust gas analyzer of the present invention can provide and case is integrated in built in whole from Fig. 1-2
Overall structure in body, each structure is stably connected with babinet to be integrated, compact-sized, easy to carry and transport, suitable for each
The emergent gas analysis detection of kind wild environment.And the gas separation unit of absolute construction can conveniently be formed it is highly integrated can be square
Just the gas analyzer exchanged, reduces the quantity of connecting pipe and the quantity of control valve, is so as to effectively reduce
System error, improves the reliability and accuracy of detection of system.
Further, the data acquisition shown in Fig. 1-2 and processing unit 14 pass through circuit connecting detection unit 13, data
Collection and processing unit 14 have the display screen 141 and at least one data output interface 142 of display testing result.In Fig. 1
The data output interface 142 of three USB forms is particularly shown out, one of data output interface 142 may be set to be
Suitable for installing the card reader form of storage card.Display screen 141 can be the liquid crystal display embedded in a side of babinet 100,
It can also be only a video output interface, external display can be connected by way of video line.Alternatively, at another
In specific embodiment, display screen 141 and data output interface 142 can also be merged into by unification according to the situation of technology development
An independent interface, such as USB Type-C interfaces, can connect external laptop by the interface and be used to connect
Detection data and/or vision signal are received, possesses more preferable scalability.
In addition, as shown in Fig. 2, foregoing three air inlet pipe 121,122,123 are respectively the first of communication with carrier gas unit 16
121 and second air inlet pipe 122 of air inlet pipe, and the 3rd air inlet pipe 123 of connection gas sampling unit 11 and calibration unit 17.
In addition, foregoing three exhaust pipes 124,125,126 are respectively the downtake pipe 124 and second exhaust for being vented
Pipe 125, and the 3rd exhaust pipe 126 of communication with detection unit 13.
Further, carrier gas unit 16 can include a carrier gas steel cylinder 161 being built in babinet 100, carrier gas steel cylinder
161 provide first via carrier gas and the second road-load gas by the first air inlet pipe 121 and the second air inlet pipe 122 respectively.That is, the present embodiment
Pass through built-in carrier gas steel cylinder 161, it is possible to reduce the trouble of joint connection in site gas cylinder, reduces systematic error, avoids interim connection
Unnecessary calibration process afterwards, especially suitable for the inspection of gas analysis in emergency circumstances under such as release of toxic gas situation
Survey.In addition, providing two-way carrier gas by an independent carrier gas steel cylinder 161, the systems such as flow, the component of different sources of the gas mistake is avoided
Difference, improves accuracy of detection.Certainly, it is contemplated that it is portable the problem of, the load volume of built-in carrier gas steel cylinder 161 is limited, can also
The interface in parallel with carrier gas steel cylinder 161 is set on babinet 100, external others high pressures when for long-time on-the-spot test
Carrier gas gas cylinder.Since flow velocity and the species selection of carrier gas have a great influence result, replacing external carrier gas source of the gas needs
Calibration is re-started, calibration process will be further detailed below.
Further, calibration unit 17 includes a calibration steel cylinder 171 and dynamic calibration instrument being built in babinet 100
172, the 3rd air inlet pipe 123 connects calibration steel cylinder 171 and dynamic calibration instrument 172 by triple valve.Likewise, the present embodiment passes through
Built-in calibration steel cylinder 171, it is possible to reduce the trouble of joint connection in site gas cylinder, reduces systematic error., can using steel cylinder 171 is demarcated
It is quickly calibrated to perform, i.e. by the way that the normal mixture body for demarcating concentration known in steel cylinder 171 is collected in quantity tube 203,
Normal separation detection program is carried out, obtains each component swarming, by quantitative datas such as peak height, peak areas, the mark with laboratory
Directrix curve contrasts, to determine whether system mode meets formally to measure.
In addition, the dynamic calibration instrument 172 in calibration unit 17 can perform multiple spot dynamic calibration process：That is, dynamic calibration
Instrument 172 is multiple spot calibration instrument, and the mixed gas of different concentration knowns is allocated by dynamic calibration instrument 172, and detection draws analysis
As a result after, corresponding gas with various concentration and quantitative values (peak height or peak area) mapping, will obtain multiple points, by these points
It can draw standard curve.When the general scene of taking out is detected, dynamic calibration instrument 172 can not have to be connected in babinet, and
Calibration steel cylinder 171 can keep being continuously connected with state, that is, be built in babinet.Can also external great Rong if detection time is long
Measure the gas cylinder of standard gas.It can only be fixed concentration to demarcate steel cylinder 171, that is, corresponding dynamic calibration instrument 172 can only be gone to obtain
A point on the standard curve gone out, will be seen that the working status of instrument, so being called according to the deviation of this point and curve
It is quickly calibrated or fast verification can also be called.This quickly calibrated system can test at the scene beginning or it is fast at the end of
Carry out, can also be set daily by program periodically be performed by control system 15 1-2 times it is quickly calibrated.
In a specific embodiment, sampling pump 18 can be set in the 3rd air inlet pipe 123, for providing certain stream
Dynamic pressure, easy to the gas sampling in the case of normal pressure, improves the efficiency controllability of sampling analysis.In the present embodiment, set
Sampling pump 18 is to be able to realize the forced flow of air-flow, in the connection structure of the present invention, to realize the pressure stream of air-flow
Dynamic, sampling pump 18 can only be arranged in the 3rd air inlet pipe 123, its position cannot arbitrarily change.
The concrete structure of the separative element of the Portable exhaust gas analyzer of the present invention is further illustrated referring to Fig. 3-4,
Wherein, the gas separation unit of the Portable exhaust gas analyzer of another specific embodiment according to the present invention is shown in Fig. 3
First and third state schematic diagram；The second view of gas separation unit shown in Fig. 3 is shown in Fig. 4.
Shown in figure, the separative element of Portable exhaust gas analyzer of the invention is arranged in separator box 120 including one
The ten-way valve 20 in portion, the ten-way valve 20 have the first to the tenth connector according to adjoining position serial number.Due to diagram
The connector of ten-way valve 20 is too many, and marking specific reference numeral in figure one by one can be very chaotic, in order to become apparent from being understood,
In Fig. 3 and Fig. 4 of the present invention, serial number is carried out according to adjoining position with Arabic numerals by each connector, often
A Arabic numerals correspond to the connector of the Chinese sequence number of same numerical value, for example, 1 corresponding connector of Arabic numerals, rear
The first connector of bright middle expression is continued, 2 corresponding connector of Arabic numerals, the second connector is represented in follow-up explanation, according to
This analogizes.
Shown in figure, the ten-way valve 20 of the separative element 12 of Portable exhaust gas analyzer of the invention, its first connector
Connected with second exhaust pipe 125；Second connector is connected with the 9th connector by being provided with the pipeline of the first chromatographic column 201；
3rd connector is connected with the 3rd exhaust pipe 126, the 3rd exhaust pipe 126 be provided with positioned at the 3rd connector and detection unit 13 it
Between the second chromatographic column 202；4th connector is connected with the second air inlet pipe 122；5th connector connects with downtake pipe 124
It is logical；6th connector is connected with the 3rd air inlet pipe 123；7th connector and the tenth connector are by being provided with quantity tube 203
Pipeline connects；8th connector is connected with the first air inlet pipe 121.
The operating method of the 1-4 Portable exhaust gas analyzers that the present invention will be described in detail with reference to the accompanying drawings, by operating gas
The process of body analysis, can be more clearly understood function and the effect of the connection structure of the separative element 12 of the present invention.
As shown in Figs 1-4, the operating method of Portable exhaust gas analyzer of the invention includes the following steps：
Referring first to Fig. 3, ten-way valve 20 is adjusted to by first state by control unit 15, i.e., described ten-way valve 20 has
One first state, in the first state, the first connector is connected with the tenth connector, and the second connector and the 3rd connector connect
Logical, the 4th connector is connected with the 5th connector, and the 6th connector is connected with the 7th connector, and the 8th connector is connected with the 9th
Mouth connection.
Then, start sampling pump 18, sample gas is gathered by gas sampling unit 11, sample gas is continually fed into the
Three air inlet pipe 123, enter quantity tube 203 subsequently into the 6th connector and from the 7th connector, the gas flowed out from quantity tube 203
Body is emptied after entering the tenth connector and the first connector by second exhaust pipe 125.By the flowing of lasting sample gas,
The sample gas of required reservation amount is stored in quantity tube 203, facilitates the analysis of next step to detect.
Meanwhile the first via carrier gas that carrier gas unit 16 provides is set to continue by the first air inlet pipe 121 by control unit 15
Be passed through the 8th connector and the 9th connector, then pass through the first chromatographic column 201, from the first chromatographic column 201 outflow gas into
Enter and the second chromatographic column 202 is flowed through by the 3rd exhaust pipe 126 after the second connector and the 3rd connector, afterwards from the second chromatographic column
The gas of 202 outflows empties after entering detection unit 13.First chromatographic column 201, the second color are flowed successively through by first via carrier gas
It is vented after spectrum column 202 and detection unit 13, it is possible to achieve the cleaning to system, until after cleaning is stablized, system reaches can be following
The preset state of one step analysis detection.By the structure of the ten-way valve 20 of the present invention, in the first state, the first via can be passed through
The first chromatographic column 201, the second chromatographic column 202 and the series connection cleaning of detection unit 13 are realized in carrier gas, and source of the gas is stablized, more efficient, has
More accurate testing result is obtained beneficial to follow-up.
Meanwhile it is passed through by the second road-load gas that control unit 15 provides carrier gas unit 16 by the second air inlet pipe 122
4th connector and the 5th connector, are then emptied by downtake pipe 124.Using the second road-load gas to corresponding connector and
Pipeline keeps cleaning, avoids polluting.
Afterwards, after system reaches predetermined stable state, can by control unit 15 by ten-way valve 20 from Fig. 3 institutes
The first state shown is adjusted to the second state shown in Fig. 4, i.e., described ten-way valve 20 has second state, shown in Fig. 4
Under second state, the first connector is connected with the second connector, and the 3rd connector is connected with the 4th connector, the 5th connector with
6th connector connects, and the 7th connector is connected with the 8th connector, and the 9th connector is connected with the tenth connector.
Then, by sampling pump 18 and gas sample injection unit 11, sample gas is continually fed into the 3rd air inlet pipe 123, so
Enter the 6th connector and the 5th connector afterwards and emptied from downtake pipe 124.This process is used to keep the sample in pipeline
The flowing of gas, the sampling easy to subsequent cycle are not in gas flow interruption, ensure the continuity of continuous on-line analysis with this, keep away
Exempt from data jump influence accuracy of detection occur.
Meanwhile the first via carrier gas that carrier gas unit 16 provides is set to continue by the first air inlet pipe 121 by control unit 15
The 8th connector and the 7th connector are passed through, the sample gas that will be stored therein subsequently into quantity tube 203 under first state
Quantity tube 203 is released, after sample gas the tenth connector of inflow and the 9th connector enter the first chromatographic column 201 afterwards, sample
The gas ingredients first parsed in gas are directly emptied, and back segment air reserve are isolated as under test gas, from the first chromatography
The gas first parsed that column 201 flows out enters after the second connector and the first connector by being emptied after second exhaust pipe 125.
In the step of the present invention, sample gas is not connected directly by the first chromatographic column 201 and the second chromatographic column 20
Analysis detection, but an emptying manipulation has been carried out before testing, one is carried out to sample gas using the first chromatographic column 201
Pre-separation, the gas first parsed is emptied, and avoids this portion gas from generating shorter impurity " big bag after entering detection unit 13
Peak " reduces the curve precision of under test gas.After the emptying operation of the first chromatographic column 201, according to the first chromatographic column 201
Characteristic, control unit 15 set reasonable time and carry out State Transferring, it is possible to which the under test gas of desired analysis detection is retained
To carry out the analysis of next step.
Meanwhile it is passed through by the second road-load gas that control unit 15 provides carrier gas unit 16 by the second air inlet pipe 122
4th connector and the 3rd connector, then flow through the second chromatographic column 202 by the 3rd exhaust pipe 126, afterwards from the second chromatography
The gas that column 202 flows out empties after entering detection unit 13.That is, the gas first parsed is being vented by the first chromatographic column 201
While, lasting purging cleaning is carried out to the second chromatographic column 202 and detection unit 13 by the second road-load gas.
According to the characteristic of the first chromatographic column 201, the gas first parsed is by the time that the first chromatographic column 201 empties can
To calculate or test acquisition, when the emptying time for reaching first parsing gas, control unit 15 automatically begins to State Transferring,
That is, ten-way valve 20 is adjusted to by the third state from the second state by control unit 15, i.e., described ten-way valve 20 has one the
Three condition, the connection relation of ten-way valve 20 is identical with first state under the third state, as shown in figure 3, likewise, first connecting at this time
Interface is connected with the tenth connector, and the second connector is connected with the 3rd connector, and the 4th connector is connected with the 5th connector, the
Six connectors are connected with the 7th connector, and the 8th connector is connected with the 9th connector.
In a third condition, by sampling pump 18 and gas sample injection unit 11, the sample gas of collection is continually fed into
Three air inlet pipe 123, enter quantity tube 203 subsequently into the 6th connector and from the 7th connector, the gas flowed out from quantity tube 203
Body is emptied after entering the tenth connector and the first connector by second exhaust pipe 125；It is with this that gas under the second state is complete
Portion discharges, to store the sample gas for being used for analyzing in quantity tube 203 next time.
Meanwhile the first via carrier gas that carrier gas unit 16 provides is set to continue by the first air inlet pipe 121 by control unit 15
The 8th connector and the 9th connector are passed through, then passes through the first chromatographic column 201, will from the gas of the first chromatographic column 201 outflow
The under test gas isolated under second state is flowed after releasing into the second connector and the 3rd connector by the 3rd exhaust pipe 126
The second chromatographic column 202 is crossed, the composition under test gas is parsed with friction speed by the second chromatographic column 202 and discharges, Zhi Houcong
The gas of second chromatographic column 202 outflow, which enters after detection unit 13 detects, to be emptied；Complete a gas in a third condition with this
The circulation of analysis；The analysis result that detection unit 13 obtains is further by circuit transmission to data acquisition and processing unit 14.
Under this step, due to will have shorter impurity by the first chromatographic column 201 before, " gas of big Bao Feng " exhausts, and passes through carrier gas
Be pushed to the second chromatographic column 202 is the real gas ingredients for needing to analyze detection, and the second chromatographic column 202 is by different components at this time
Gas parse discharge at different rates, pulled open the interval of the curve wave crest of gas with various composition, avoided adjacent peaks
Interference is mutually covered, the detection degree of different components especially microcomponent is improved, improves accuracy of detection.
Meanwhile it is passed through by the second road-load gas that control unit 15 provides carrier gas unit 16 by the second air inlet pipe 122
4th connector and the 5th connector, are then emptied by downtake pipe 124；Gas under the second state is all arranged with this
Go out, and pipeline is cleaned by carrier gas, the gas analysis of preparation next time.
In conclusion the Portable exhaust gas analyzer of the present invention provides the overall knot being integrated in built in whole in babinet
Structure, each structure is stably connected with babinet to be integrated, compact-sized, easy to carry and transport, suitable for various wild environments
Emergent gas analysis detection.And the gas separation unit of absolute construction can conveniently form the highly integrated gas conveniently exchanged
Analyzer, reduces the quantity of connecting pipe and the quantity of control valve, so as to effectively reduce systematic error, improves
The reliability and accuracy of detection of system.In addition, the gas separation unit of the present invention is miscellaneous by what is first parsed by the first chromatographic column
The emptying of peak gas, is conducive to the raising of gas accuracy of detection to be checked, between the wave crest for pulling open each composition by the second chromatographic column afterwards
Away from improving the detection degree of different components especially microcomponent, improve accuracy of detection.
It will be appreciated by those skilled in the art that although the present invention is described in the way of multiple embodiments,
It is that not each embodiment only includes an independent technical solution.So narration is used for the purpose of for the sake of understanding in specification,
The skilled in the art should refer to the specification as a whole is understood, and by technical solution involved in each embodiment
The modes of different embodiments can be mutually combined into understand protection scope of the present invention by regarding as.
The foregoing is merely the schematical embodiment of the present invention, the scope of the present invention is not limited to.It is any
Those skilled in the art, equivalent variations, modification and the combination made on the premise of the design of the present invention and principle is not departed from,
The scope of protection of the invention should all be belonged to.
Claims (10)
1. a kind of Portable exhaust gas analyzer, including babinet (100), it is characterised in that the babinet (100) be provided with gas into
Sample unit (11), the babinet (100) be internally provided with gas separation unit (12), detection unit (13), data acquisition and
Processing unit (14), control unit (15) and carrier gas unit (16) and calibration unit (17)；Wherein, the gas separation unit
(12) it is arranged in an independent separator box (120), the separator box (120) is provided with three air inlet pipe of its inside of connection
(121,122,123) and three exhaust pipes (124,125,126).
2. Portable exhaust gas analyzer as claimed in claim 1, it is characterised in that three air inlet pipe (121,122,
123) the first air inlet pipe (121) and the second air inlet pipe (122) of the carrier gas unit (16) are respectively connected, and described in connection
3rd air inlet pipe (123) of gas sampling unit (11) and calibration unit (17).
3. Portable exhaust gas analyzer as claimed in claim 2, it is characterised in that three exhaust pipes (124,125,
126) respectively for the downtake pipe (124) and second exhaust pipe (125) that are vented, and the connection detection unit (13)
The 3rd exhaust pipe (126).
4. Portable exhaust gas analyzer as claimed in claim 3, it is characterised in that the data acquisition and processing unit (14)
The detection unit (13) is connected by circuit, the data acquisition and processing unit (14) have the display of display testing result
Shield (141) and at least one data output interface (142).
5. Portable exhaust gas analyzer as claimed in claim 4, it is characterised in that the carrier gas unit (16) is included in one
The carrier gas steel cylinder (161) in the babinet (100) is put, the carrier gas steel cylinder (161) passes through first air inlet pipe respectively
(121) and the second air inlet pipe (122) provides first via carrier gas and the second road-load gas.
6. Portable exhaust gas analyzer as claimed in claim 5, it is characterised in that the calibration unit (17) is included in one
Calibration steel cylinder (171) and dynamic calibration instrument (172) in the babinet (100) are put, the 3rd air inlet pipe (123) passes through three
Port valve connection is described to demarcate steel cylinder (171) and the dynamic calibration instrument (172), is provided with and adopts in the 3rd air inlet pipe (123)
Sample pumps (18).
7. Portable exhaust gas analyzer as claimed in claim 6, it is characterised in that the gas separation unit (12) includes one
A to be arranged on the internal ten-way valve (20) of the separator box (120), the ten-way valve (20) has compiles according to adjoining position order
Number the first to the tenth connector；Wherein, first connector is connected with the second exhaust pipe (125)；Described second connects
Interface is connected with the 9th connector by being provided with the pipeline of the first chromatographic column (201)；3rd connector and the described 3rd
Exhaust pipe (126) connects, and the 3rd exhaust pipe (126) is provided with positioned at the 3rd connector and the detection unit (13)
Between the second chromatographic column (202)；4th connector is connected with second air inlet pipe (122)；5th connector
Connected with the downtake pipe (124)；6th connector is connected with the 3rd air inlet pipe (123)；Described 7th connects
Interface is connected with the tenth connector by being provided with the pipeline of quantity tube (203)；8th connector and first air inlet
Manage (121) connection.
A kind of 8. operating method of Portable exhaust gas analyzer as claimed in claim 7, it is characterised in that the described method includes
Following steps：
The ten-way valve (20) is adjusted to by first state by described control unit (15), it is in said first condition, described
First connector is connected with the tenth connector, and second connector is connected with the 3rd connector, and the described 4th connects
Interface is connected with the 5th connector, and the 6th connector is connected with the 7th connector, the 8th connector with
The 9th connector connection；
Start the sampling pump (18), sample gas is gathered by the gas sampling unit (11), holds the sample gas
It is continuous to be passed through the 3rd air inlet pipe (123), enter the quantity tube subsequently into the 6th connector and from the 7th connector
(203), the second exhaust is passed through after entering the tenth connector and the first connector from the gas of the quantity tube (203) outflow
Manage (125) emptying；
Meanwhile by described control unit (15) make the first via carrier gas that the carrier gas unit (16) provides by described first into
Tracheae (121) is continually fed into the 8th connector and the 9th connector, first chromatographic column (201) is then passed through, from institute
The gas for stating the first chromatographic column (201) outflow enters after the second connector and the 3rd connector by the 3rd exhaust pipe
(126) second chromatographic column (202) is flowed through, enters the detection from the gas of second chromatographic column (202) outflow afterwards
Unit (13) empties afterwards；
Meanwhile by described control unit (15) make the second road-load gas that the carrier gas unit (16) provides by described second into
Tracheae (122) is passed through the 4th connector and the 5th connector, is then emptied by the downtake pipe (124).
9. operating method as claimed in claim 8, further comprises following steps：
The ten-way valve (20) is adjusted to by the second state from first state by described control unit (15), in second shape
Under state, first connector is connected with second connector, and the 3rd connector is connected with the 4th connector, institute
The 5th connector to be stated to connect with the 6th connector, the 7th connector is connected with the 8th connector, and the described 9th
Connector is connected with the tenth connector；
By the sampling pump (18) and the gas sampling unit (11), the sample gas of collection is continually fed into the described 3rd
Air inlet pipe (123), empties subsequently into the 6th connector and the 5th connector and from the downtake pipe (124)；
Meanwhile by described control unit (15) make the first via carrier gas that the carrier gas unit (16) provides by described first into
Tracheae (121) is continually fed into the 8th connector and the 7th connector, subsequently into the quantity tube (203) by described first
The sample gas that is stored therein under state releases the quantity tube (203), and sample gas flows into the tenth connector and the afterwards
After nine connectors enter first chromatographic column (201), the gas ingredients first parsed in sample gas are directly emptied, separation
Go out back segment air reserve as under test gas, enter second from the gas first parsed of first chromatographic column (201) outflow
Emptied afterwards by the second exhaust pipe (125) after connector and the first connector；
Meanwhile by described control unit (15) make the second road-load gas that the carrier gas unit (16) provides by described second into
Tracheae (122) is passed through the 4th connector and the 3rd connector, then flows through described by the 3rd exhaust pipe (126)
Two chromatographic columns (202), empty afterwards from the gas of second chromatographic column (202) outflow into the detection unit (13) afterwards.
10. operating method as claimed in claim 9, further comprises following steps：
The ten-way valve (20) is adjusted to by the third state, the third state from the second state by described control unit (15)
Under the ten-way valve (20) connection relation it is identical with the first state, wherein, first connector with the described tenth connect
Orifice, second connector are connected with the 3rd connector, and the 4th connector connects with the 5th connector
Logical, the 6th connector is connected with the 7th connector, and the 8th connector is connected with the 9th connector；
By the sampling pump (18) and the gas sampling unit (11), the sample gas of collection is continually fed into the described 3rd
Air inlet pipe (123), enters the quantity tube (203), from the quantity tube subsequently into the 6th connector and from the 7th connector
(203) gas of outflow is emptied after entering the tenth connector and the first connector by the second exhaust pipe (125)；Will with this
Gas under second state is all discharged, to store the sample for being used for analyzing in the quantity tube (203) next time
Gas；
Meanwhile by described control unit (15) make the first via carrier gas that the carrier gas unit (16) provides by described first into
Tracheae (121) is continually fed into the 8th connector and the 9th connector, first chromatographic column (201) is then passed through, from institute
The gas for stating the first chromatographic column (201) outflow releases the under test gas isolated under second state into the second company
Second chromatographic column (202) is flowed through by the 3rd exhaust pipe (126) after interface and the 3rd connector, passes through described second
Chromatographic column (202) makes the composition under test gas parse discharge with friction speed, is flowed out afterwards from second chromatographic column (202)
Gas enter the detection unit (13) detection after empty；Complete the circulation of a gas analysis in a third condition with this；
The analysis result that the detection unit (13) obtains further gives the data acquisition and processing unit (14) by circuit transmission；
Meanwhile by described control unit (15) make the second road-load gas that the carrier gas unit (16) provides by described second into
Tracheae (122) is passed through the 4th connector and the 5th connector, is then emptied by the downtake pipe (124)；With this
Gas under second state is all discharged, and pipeline is cleaned by carrier gas, the gas analysis of preparation next time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810041994.XA CN108037217A (en) | 2018-01-17 | 2018-01-17 | A kind of Portable exhaust gas analyzer and its operating method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810041994.XA CN108037217A (en) | 2018-01-17 | 2018-01-17 | A kind of Portable exhaust gas analyzer and its operating method |
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| CN201810041994.XA Pending CN108037217A (en) | 2018-01-17 | 2018-01-17 | A kind of Portable exhaust gas analyzer and its operating method |
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| CN109490447A (en) * | 2019-01-11 | 2019-03-19 | 国网安徽省电力有限公司电力科学研究院 | A kind of sulfur hexafluoride gas mixture mixing ratio chromatographic detection apparatus |
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Application publication date: 20180515 |