CN206638634U - Online portable gas chromatograph and environment monitoring device - Google Patents
Online portable gas chromatograph and environment monitoring device Download PDFInfo
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- CN206638634U CN206638634U CN201720324763.0U CN201720324763U CN206638634U CN 206638634 U CN206638634 U CN 206638634U CN 201720324763 U CN201720324763 U CN 201720324763U CN 206638634 U CN206638634 U CN 206638634U
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- 238000012806 monitoring device Methods 0.000 title claims abstract description 10
- 238000001514 detection method Methods 0.000 claims abstract description 43
- 150000001875 compounds Chemical class 0.000 claims abstract description 35
- 230000005540 biological transmission Effects 0.000 claims abstract description 16
- 238000005070 sampling Methods 0.000 claims description 55
- 239000012855 volatile organic compound Substances 0.000 claims description 43
- 150000002430 hydrocarbons Chemical class 0.000 claims description 34
- 239000004215 Carbon black (E152) Substances 0.000 claims description 33
- 229930195733 hydrocarbon Natural products 0.000 claims description 33
- 238000001179 sorption measurement Methods 0.000 claims description 32
- 238000004458 analytical method Methods 0.000 claims description 23
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- 238000003199 nucleic acid amplification method Methods 0.000 claims description 8
- 239000000126 substance Substances 0.000 claims description 5
- 230000005611 electricity Effects 0.000 claims description 4
- 238000004868 gas analysis Methods 0.000 claims description 3
- 239000007789 gas Substances 0.000 description 193
- 239000000523 sample Substances 0.000 description 81
- 239000012159 carrier gas Substances 0.000 description 23
- 230000008676 import Effects 0.000 description 9
- 238000000926 separation method Methods 0.000 description 7
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 6
- 238000003795 desorption Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- 238000004817 gas chromatography Methods 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- 230000009977 dual effect Effects 0.000 description 4
- 238000005485 electric heating Methods 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
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- 238000006243 chemical reaction Methods 0.000 description 2
- 238000004587 chromatography analysis Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
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- 230000005526 G1 to G0 transition Effects 0.000 description 1
- 239000000809 air pollutant Substances 0.000 description 1
- 231100001243 air pollutant Toxicity 0.000 description 1
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Abstract
The utility model, which provides a kind of online portable gas chromatograph and environment monitoring device, the online portable gas chromatograph, to be included：Feed arrangement, gas path switching device, example enrichment device, component separating device, component detection means and data transmission device, wherein, the input of feed arrangement is used to gather sample gas；The output end with feed arrangement, example enrichment device and component separating device are connected gas path switching device respectively, for flow direction of the switch sample gas in feed arrangement, example enrichment device and component separating device；Example enrichment device is used for enriched sample gas；Component separating device is used to analyze the sample gas being enriched with example enrichment device, to obtain target compound；Component detection means is used to analyze target compound；Data transmission device electrically connects with component detection means, the data for analyzing to obtain for transmitting component detection means.The utility model alleviates the poor technical problem of practicality of traditional gas chromatograph.
Description
Technical field
The utility model is related to the technical field of instrument and meter, more particularly, to a kind of online portable gas chromatograph and
Environment monitoring device.
Background technology
In environmental monitoring, as monitoring requirements are on the increase, therefore propose to surrounding air, industrial park,
Factory circle of enterprise, fixed-contamination source emission gas etc. carry out the demand that NMHC and VOCs concentration of component are monitored.Country's mark
It is accurate《The measure gas chromatography of stationary source NMHC》(HJ38-1999) and《The measure solid of surrounding air benzene homologues is inhaled
Attached Heat desorption -GC》(HJ 583-2010) defined detection control air pollutants in NMHC and
Benzene homologues, it usually needs after spot sampling is enriched to laboratory parsing, detected with gas chromatograph.
Gas chromatographic technique is that volatility based on component to be separated is different with polarity and separate a skill of analysis
Art, therefore gas-chromatography can carry out qualitative and quantitative analysis to the multicomponent organic compound in biased sample.Gaseous state is organic
Volatilization enters people to after chromatography column for the component of steam after component or heating, is divided between stationary phase and mobile phase
Match somebody with somebody, so as to reach the purpose of separation, enter people from the component of chromatographic column afterbody outflow and signal is produced into detector, it is fixed so as to reach
Property and quantitative purpose.
Traditional gas chromatograph, generally comprise following component：1st, carrier gas flux control system；2nd, dead volume is small
Sampling system；3rd, the column oven system analyzed for constant temperature or temperature programming；4th, the highly sensitive inspection for quickly analyzing
Survey device；5th, recorder or chromatographic data record system.Because traditional gas chromatograph adjusts quick liter with big post case
Gentle cooling, therefore volume is all huger, and need outer dispensing computer to carry out data processing and calculating, therefore can only be in reality
Test in room and use, this limits the application of gas chromatograph to a certain extent.
It is also seldom that commercialized portable gas chromatograph can be formed at present, but also all there is clearly disadvantageous, master
Show the following aspects：1st, volume is still larger, heavier-weight, and movement is got up also relatively difficult；2nd, similar to by fact
The equipment for testing room moves scene to, it is necessary to be sampled outside with sample devices, it is necessary to external computer and the outer power supply for matching somebody with somebody 220V, not enough
It is portable；3rd, the data of detection can not carry out real-time online transmission, be unfavorable for environmentally friendly supervision department and grasp pollutant situation in real time；4、
Frequently with thermal conductivity detector (TCD) (TCD), sensitivity is relatively low；5th, using photoionization detector (PID), due to the ion of different material
It is very big to change efficiency difference, in addition to BTEX, photoionization detector (PID) is to the corresponding poor of other materials, and photoionization
The life-span of detector (PID) is shorter；6th, detect NMHC and VOCs concentration of component, traditional gas chromatograph typically use
Two sets of instruments or one set of instrument carry out the mode of sample introduction twice, and device is complicated, cost is high, and complex operation.
Utility model content
The purpose of this utility model be to provide it is a kind of can detect simultaneously NMHC and VOCs components it is online just
Formula gas chromatograph and environment monitoring device are taken, to alleviate the poor technical problem of the practicality of traditional gas chromatograph.Should
Online portable gas chromatograph small volume, it is convenient for carrying, onboard data processor, single injected sampling while detects NMHC
And VOCs concentration of component, measurement data can carry out data transmission in real time, built-in enriching apparatus, simple to operate.
According to the one side of the utility model embodiment, there is provided a kind of online portable gas chromatograph, including：Gas
Circuit switching device, example enrichment device, component separating device and component detection means, wherein, the input of the feed arrangement
For gathering sample gas, the sample gas includes at least one of：Sections of the online portable gas chromatograph institute
Interior indoor gas, outdoor outdoor gas residing for the online portable gas chromatograph, stationary source row's mouth discharge
Gas；The gas path switching device respectively divide by the output end with the feed arrangement, the example enrichment device and the component
It is connected from device, for switching the sample gas in the feed arrangement, the example enrichment device and the component point
From the flow direction in device；The quantity of the example enrichment device is multiple, for being enriched with the sample gas；The component separation
Device is connected by the gas path switching device with the example enrichment device, and the component separating device and the sample
Enriching apparatus is correspondingly arranged, for separating the sample gas being enriched with the example enrichment device, to obtain target chemical combination
Thing；The component detection means is connected with the component separating device, for analyzing the target compound, obtains
Analysis result.
Further, the online portable gas chromatograph also includes：Data transmission device, wherein, the data pass
Defeated device and the component detection means be wired or wireless connection, for the result for analyzing to obtain by the component detection means
Transmit to monitor terminal.
Further, the example enrichment device includes：First example enrichment device and the second example enrichment device, its
In, the first example enrichment device and the second example enrichment device are connected with the gas path switching device.
Further, each example enrichment device includes：Trap casing, adsorption tube and the 3rd electric heater are enriched with, its
In, adsorption tube and the 3rd electric heater are arranged at the inside for being enriched with trap casing, and the adsorption tube and the gas
Circuit switching device is connected.
Further, the component separating device includes：Total hydrocarbon separator, the first end of the total hydrocarbon separator with
The gas path switching device is connected, for being separated to the sample gas being enriched in the first example enrichment device,
With isolated first group of target compound；VOCs component separating devices, the first end of the VOCs component separating devices and institute
Gas path switching device is stated to be connected, for being separated to the sample gas being enriched in the second example enrichment device, with
Isolated second group of target compound, wherein, first group of target compound is with second group of target compound for not
Identical compound.
Further, the component detection means includes：First flame ionization detector, first flame ion
The first end of detector is connected with the second end of the total hydrocarbon separator, for ionizing first group of target chemical combination
Thing, to obtain the first electric signal；First signal amplifier, the first end of first signal amplifier and first flame from
Second end of sonization detector is connected, for being amplified to first electric signal；Second flame ionization detector, institute
The first end for stating the second flame ionization detector is connected with the second end of the VOCs component separating devices, for ionizing
Second group of target compound, to obtain the second electric signal；Secondary signal amplifier, the first of the secondary signal amplifier
End is connected with the second end of second flame ionization detector, for being amplified to second electric signal；Data
Processor, the data processor respectively with the second end of first signal amplifier and the secondary signal amplifier
Two ends are connected, for analyzing first electric signal after amplification, and to second telecommunications after amplification
Number analyzed.
Further, the total hydrocarbon separator includes：First miniature post case, the first electric heater and total hydrocarbon analytical column,
Wherein, the total hydrocarbon analytical column is connected with the gas path switching device pipeline, first electric heater and total hydrocarbon analysis
Post is arranged at the inside of the described first miniature post case；The VOCs component separating devices include：Second miniature post case, the second electricity
Heater and VOCs component analysis posts, wherein, the VOCs component analyses post is connected with the gas path switching device pipeline, described
Second electric heater and the VOCs component analyses post are arranged at the inside of the described second miniature post case.
Further, the gas path switching device includes：First magnetic valve, first magnetic valve by the first pipeline with
The output end of the feed arrangement is connected；Second solenoid valve, the second solenoid valve export phase by the second pipeline and sample gas
Connection；Sampling valve, the sampling valve respectively with first magnetic valve, second solenoid valve, the example enrichment device and described
Component separating device pipeline connects；Wherein, when first magnetic valve and the second solenoid valve are in opening, Yi Jisuo
When stating sampling valve and being in first state, the sample gas entered by the feed arrangement enters the example enrichment device
In；When first magnetic valve and the second solenoid valve are closed, and the sampling valve is in the second state,
The sample gas being enriched in the example enrichment device sequentially enters the component separating device and the component detection means
Analyzed.
Further, the online portable gas chromatograph also includes：Timing means and control device, wherein, it is described
Timing means electrically connects with the control device, at the end of the timing means timing, control device control it is described
Line portable gas chromatograph starts to perform the operation of the sample gas analysis, so that the online portable gas chromatograph
Automatically the sample gas is analyzed, and controls the timing means to re-start timing.
According to the other side of the utility model embodiment, a kind of environment monitoring device, including above-mentioned are additionally provided
Online portable gas chromatograph described in one.
In the online portable gas chromatograph that the utility model embodiment provides, including feed arrangement, gas circuit switching
Device, example enrichment device, component separating device, component detection means and data transmission device, wherein, gas path switching device is used
The conducting of pipeline between feed arrangement and each example enrichment device, so that feed arrangement fills to each example enrichment simultaneously
Input sample gas is put, so that sample gas is enriched in example enrichment device；Next, gas path switching device can be also used for
The conducting of pipeline between example enrichment device and component separating device is controlled, so as to be enriched in the sample gas in example enrichment device
Body is flowed into component separating device and separated, and the component after separation sequentially enters component detection means and is detected, group
The data that point detection means tests and analyzes out are uploaded by data transmission device.The utility model embodiment provides online
In portable gas chromatograph, feed arrangement can be simultaneously to each example enrichment device input sample gas, and for every
Individual example enrichment device, it is provided with corresponding component separating device and the sample gas being enriched in the example enrichment device is entered
Row analysis, so as to the purpose for having reached single injected sampling, dual detector detects, and then alleviate the practicality of traditional gas chromatograph
Poor technical problem, realize the technique effect for the practicality for improving gas chromatograph.
Brief description of the drawings
, below will be right in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
The required accompanying drawing used is briefly described in embodiment or description of the prior art, it should be apparent that, describe below
In accompanying drawing be some embodiments of the present utility model, for those of ordinary skill in the art, do not paying creativeness
On the premise of work, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the schematic diagram according to a kind of online portable gas chromatograph of the utility model embodiment；
Fig. 2 is the schematic diagram according to a kind of alternatively online portable gas chromatograph of the utility model embodiment；
Fig. 3 is to be in sampling work according to a kind of alternatively online portable gas chromatograph of the utility model embodiment
The schematic diagram of state；
Fig. 4 is to be in sample introduction work according to a kind of alternatively online portable gas chromatograph of the utility model embodiment
The schematic diagram of state.
Icon：10- feed arrangements；20- gas path switching devices；30- example enrichment devices；40- component separating devices；
50- component detection means；60- data transmission devices；70- samples gas exports；80- carrier gas inlets；11- sample gas imports；12-
Sampling pump；The magnetic valves of 21- first；22- second solenoid valves；23- sampling valves；31- the first example enrichment devices；32- second
Example enrichment device；311- is enriched with trap casing；312- adsorption tubes；The electric heaters of 313- the 3rd；321- is enriched with trap casing；
322- adsorption tubes；The electric heaters of 323- the 4th；41- total hydrocarbon separators；42-VOCs component separating devices；411- first
Miniature post case；The electric heaters of 412- first；413- total hydrocarbon analytical columns；The second miniature post cases of 421-；The electrical heating of 422- second
Device；423-VOCs component analysis posts；The flame ionization detectors of 51- first；The signal amplifiers of 52- first；The fire of 53- second
Flame ionisation detector；54- secondary signal amplifiers；55- data processors；The carrier gas inlets of 81- first；82- second is carried
Gas import.
Embodiment
The technical solution of the utility model is clearly and completely described below in conjunction with accompanying drawing, it is clear that described
Embodiment is the utility model part of the embodiment, rather than whole embodiments.Based on the embodiment in the utility model, sheet
The every other embodiment that field those of ordinary skill is obtained under the premise of creative work is not made, belongs to this practicality
Novel protected scope.
, it is necessary to explanation in description of the present utility model, term " " center ", " on ", " under ", it is "left", "right", " perpendicular
Directly ", the orientation of the instruction such as " level ", " interior ", " outer " or position relationship are based on orientation shown in the drawings or position relationship, are only
Described for the ease of description the utility model and simplifying, rather than instruction or imply signified device or element must have it is specific
Orientation, with specific azimuth configuration and operation, therefore it is not intended that to limitation of the present utility model.In addition, term " the
One ", " second ", " the 3rd " are only used for describing purpose, and it is not intended that instruction or hint relative importance.
, it is necessary to which explanation, unless otherwise clearly defined and limited, term " are pacified in description of the present utility model
Dress ", " connected ", " connection " should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integratedly
Connection；Can be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected by intermediary,
It can be the connection of two element internals.For the ordinary skill in the art, above-mentioned art can be understood with concrete condition
Concrete meaning of the language in the utility model.
According to the utility model embodiment, there is provided a kind of embodiment of online portable gas chromatograph.
Fig. 1 is according to a kind of schematic diagram of online portable gas chromatograph of the utility model embodiment, such as Fig. 1 institutes
Show, the online portable gas chromatograph includes：Feed arrangement 10, gas path switching device 20, example enrichment device 30, component point
From device 40 and component detection means 50, wherein,
The input of feed arrangement 10 is used to gather sample gas；Wherein, sample gas is online portable gas chromatography
Instrument detects the gas in environment, specifically includes at least one of：Indoor interior residing for online portable gas chromatograph
Gas, outdoor outdoor gas residing for online portable gas chromatograph, the gas of stationary source row's mouth discharge.
Gas path switching device 20 output end with feed arrangement 10, example enrichment device 20 and component separating device 40 respectively
It is connected, for flow direction of the switch sample gas in feed arrangement 10, example enrichment device 30 and component separating device 40.
The quantity of example enrichment device 30 is multiple, for enriched sample gas；Wherein, in the utility model embodiment
In, multiple example enrichment devices can be set simultaneously, and each example enrichment device is connected with gas path switching device.Work as gas
When circuit switching device connects the gas circuit between example enrichment device and feed arrangement, sample gas that feed arrangement is got can be through
Gas path switching device is crossed, and flows to each example enrichment device simultaneously, so that each example enrichment device is carried out to sample gas
Enrichment.
It is still, dense when sample gas it should be noted that in the prior art, sample gas is gathered using quantitative loop
When spending relatively low, the concentration of sample gas is can't detect using the quantitatively rear detector of quantitative loop.Based on the problem, in the utility model
In embodiment, using example enrichment device, by the example enrichment device can solve the problem that due to sample gas concentration is relatively low when lead
The problem of causing with can't detect sample gas concentration after quantitative loop.
Component separating device 40 is connected by gas path switching device 20 with example enrichment device 30, and component separating device
40 are correspondingly arranged with example enrichment device 30, for analyzing the sample gas being enriched with example enrichment device, to obtain targeted
Compound；Wherein, component separating device is correspondingly arranged with example enrichment device refers to that an example enrichment device is correspondingly arranged one
Component separating device, and each component separating device is used to analyze different compounds.By the set-up mode, one can be reached
Secondary sample introduction, the purpose of dual detector detection.Relative to traditional gas chromatograph two are carried out using two sets of instruments or one set of instrument
The mode of secondary sample introduction, the structure of gas chromatograph can be simplified so that operation is by a relatively simple, more practical.
Component detection means 50 is connected with component separating device 40, for analyzing target compound, is divided
Analyse result.
In an optional embodiment of the utility model embodiment, the online portable gas chromatograph also includes：
Data transmission device 60, wherein, data transmission device 60 and component detection means 50 be wired or wireless connection, for by component
The result that detection means is analyzed to obtain is transmitted to monitor terminal.
It should be noted that in the utility model embodiment, built-in component detection means, the component detection means can
Target compound is analyzed, without external data processor.
In the online portable gas chromatograph that the utility model embodiment provides, including feed arrangement, gas circuit switching
Device, example enrichment device, component separating device, component detection means and data transmission device, wherein, gas path switching device is used
The conducting of pipeline between feed arrangement and each example enrichment device, so that feed arrangement fills to each example enrichment simultaneously
Input sample gas is put, so that sample gas is enriched in example enrichment device；Next, gas path switching device can be also used for
The conducting of pipeline between example enrichment device and component separating device is controlled, so as to be enriched in the sample gas in example enrichment device
Body is flowed into component separating device and separated, and the component after separation sequentially enters component detection means and is detected, group
The data that point detection means tests and analyzes out are uploaded by data transmission device.The utility model embodiment provides online
In portable gas chromatograph, feed arrangement can be simultaneously to each example enrichment device input sample gas, and for every
Individual example enrichment device, it is provided with corresponding component separating device and the sample gas being enriched in the example enrichment device is entered
Row analysis, so as to the purpose for having reached single injected sampling, dual detector detects, and then alleviate the practicality of traditional gas chromatograph
Poor technical problem, realize the technique effect for the practicality for improving gas chromatograph.
In order to improve the portability and actual effect of environment pollution detection work, research and extension miniaturization, intelligence in China
Change, the online portable gas chromatograph of scene turn into an important developing direction, and this is also to reduce China in the field
The needs of the upper technological gap between developed country.The online portable gas chromatograph that the utility model embodiment provides can
Alleviate the poor technical problem of the practicality of traditional gas chromatograph.The utility model is implemented below in conjunction with Fig. 2 to Fig. 4
The online portable gas chromatograph that example provides specifically is introduced.
Fig. 2 is according to a kind of schematic diagram of alternatively online portable gas chromatograph of the utility model embodiment, such as
Shown in Fig. 2, feed arrangement 10 includes：Sample gas import 11 and sampling pump 12, wherein,
As shown in Fig. 2 heat traced pipeline phase of the input of sample gas import 11 with being placed on online portable gas chromatograph
Connection, the output end of sample gas import 11 are connected with the first end of sampling pump 12；Second end of sampling pump 12 fills with gas circuit switching
20 are put to be connected.
As shown in Fig. 2 gas path switching device 20 includes：First magnetic valve 21, second solenoid valve 22 and sampling valve 23, its
In,
As shown in Fig. 2 output end phase of first magnetic valve 21 by the first pipeline and the sampling pump 12 in feed arrangement 10
Connection；
Second solenoid valve 22 is connected by the second pipeline with sample gas outlet 60；And
Sampling valve 23 respectively with the first magnetic valve 21, second solenoid valve 22, example enrichment device 30 and component separating device
40 pipelines connect.
By foregoing description, the quantity of example enrichment device is multiple, in the utility model embodiment, preferred sample
The quantity of product enriching apparatus is two, in following embodiments, is illustrated by taking two example enrichment devices as an example.
Specifically, as shown in Fig. 2 example enrichment device 30 includes：First example enrichment device 31 and the second example enrichment
Device 32, wherein, the first example enrichment device 31 and the second example enrichment device 32 are connected with gas path switching device 20.From
As can be seen that the first example enrichment device 31 is connected with the pipeline of sampling valve 23 in gas path switching device 20 in Fig. 2, the second sample
Enriching apparatus 32 is equally connected with the pipeline of sampling valve 23 of gas path switching device 20.
Because component separating device 40 is identical with the quantity of example enrichment device 30, and component separating device 40 and sample are rich
Acquisition means 30, which correspond, to be set.Therefore, component separating device 40 wraps in online portable gas chromatograph as shown in Figure 2
Include：Total hydrocarbon separator 41 and VOCs component separating devices 42, wherein,
The first end of total hydrocarbon separator 41 is connected with gas path switching device, for being enriched in the first example enrichment dress
Sample gas in putting is separated, with isolated first group of target compound；
The first end of VOCs component separating devices 42 is connected with gas path switching device 20, for being enriched in the second sample
Sample gas in enriching apparatus is separated, with isolated second group of target compound, wherein, first group of target compound
It is the compound that differs with second group of target compound.
In the utility model embodiment, above-mentioned first group of target compound is total hydrocarbon compound, second group of target chemical combination
Thing is VOC (volatile organic compounds, abbreviation VOCs).In order to above two chemical combination
Thing is separated, it is therefore desirable to sets two example enrichment devices (that is, the first example enrichment device and the second example enrichment dress
Put), and it is correspondingly arranged total hydrocarbon separator and VOCs component separating devices., can be simultaneously to total hydrocarbon by the set-up mode
Compound and VOC are separated, so as to the purpose for having reached single injected sampling, dual detector detects.
It should be noted that in addition to above two compound, what is provided in the utility model embodiment is online portable
Formula gas chromatograph can also separate to other compounds, for example, the 3rd group of target compound.Now just need to set
Three example enrichment devices (that is, the first example enrichment device, the second example enrichment device and the 3rd example enrichment device), and
The total hydrocarbon separator of setting, VOCs component separating devices, and for separating the separator of the 3rd group of target compound.Cause
This, in the utility model embodiment, is not specifically limited for the quantity of example enrichment device.
In the utility model embodiment, the first magnetic valve, second solenoid valve and sampling valve are entering for switch sample gas
To the flow direction in device, example enrichment device and component separating device.Specifically, when the first magnetic valve and second solenoid valve are in
Opening, and when sampling valve is in first state, the sample gas entered by feed arrangement enters example enrichment device
In；When the first magnetic valve and second solenoid valve are closed, and sampling valve is in the second state, sample richness is enriched in
Sample gas in acquisition means sequentially enters component separating device and component detection means is analyzed.Wherein, in the first shape
The sampling valve of state can connect the gas circuit between sampling pump and example enrichment device；Sampling valve in the second state can connect
Gas circuit between component separating device and example enrichment device.Specifically operation principle will be situated between in following embodiments
Continue.
As shown in Fig. 2 component detection means 50 includes：First flame ionization detector 51, the first signal amplifier 52,
Second flame ionization detector 53, secondary signal amplifier 54 and data processor 55, wherein,
The first end of first flame ionization detector 51 is connected with the second end of total hydrocarbon separator, for ionizing
First group of target compound, to obtain the first electric signal；Wherein, the first flame ionization detector 51 is the first FID detections
Device.
The first end of first signal amplifier 52 is connected with the second end of the first flame ionization detector, for
One electric signal is amplified；
The first end of second flame ionization detector 53 is connected with the second end of VOCs component separating devices, for from
Second group of target compound of sonization, to obtain the second electric signal；Wherein, the second flame ionization detector 53 is the 2nd FID
Detector.
The first end of secondary signal amplifier 54 is connected with the second end of the second flame ionization detector, for
Two electric signals are amplified；
Data processor 55 is connected with the second end of the first signal amplifier and the second end of secondary signal amplifier respectively
Connect, for analyzing the first electric signal after amplification, and the second electric signal after amplification is analyzed.
Further, as shown in Fig. 2 the first example enrichment device 31 includes：It is enriched with trap casing 311, adsorption tube 312 and the
Three electric heaters 313, wherein, the electric heater 313 of adsorption tube 312 and the 3rd is arranged at the inside of enrichment trap casing 311, and inhales
Attached pipe 312 is connected with gas path switching device.Specifically, adsorption tube 312 connects with the sampling valve pipeline in gas path switching device 20
Connect.
Further, as shown in Fig. 2 the second example enrichment device 32 includes：It is enriched with trap casing 321, adsorption tube 322 and the
Four electric heaters 323, wherein, the electric heater 323 of adsorption tube 322 and the 4th is arranged at the inside of enrichment trap casing 321, and inhales
Attached pipe 322 is connected with gas path switching device.Specifically, adsorption tube 322 connects with the sampling valve pipeline in gas path switching device 20
Connect.
It should be noted that adsorption tube 312 and adsorption tube 322 can be chosen for the adsorption tube of same model, can also select
It is taken as the adsorption tube that model differs；3rd electric heater 313 and the 4th electric heater 323 can be chosen for the electricity of same model
Heater, the electric heater that model differs can also be chosen for.
Further, as shown in Fig. 2 total hydrocarbon separator 41 includes：First miniature post case 411, the first electric heater 412
With total hydrocarbon analytical column 413, wherein, total hydrocarbon analytical column 413 is connected with gas path switching device pipeline, the first electric heater 412 and total
Hydrocarbon analytical column 413 is arranged at the inside of the first miniature post case 411.
Further, as shown in Fig. 2 VOCs component separating devices 42 include：Second miniature post case 421, the second electrical heating
Device 422 and VOCs component analyses post 423, wherein, VOCs component analyses post 423 is connected with gas path switching device pipeline, the second electricity
Heater 422 and VOCs component analyses post 423 are arranged at the inside of the first miniature post case 421.
In the utility model embodiment, using miniature post case, online portable gas chromatograph instrument body is enabled to
Product reduces, is compact-sized, in light weight, being convenient for carrying.
In the utility model embodiment, online portable gas chromatograph also includes carrier gas inlet 80, wherein, carrier gas is entered
The quantity of mouth is identical with the quantity of example enrichment device, and carrier gas inlet is corresponded with example enrichment device and set.Therefore, such as
Shown in Fig. 2, the quantity of carrier gas inlet 80 is two, i.e. the first carrier gas inlet 81 and the second carrier gas inlet 82.
As shown in Fig. 2 the first carrier gas inlet 81 is connected with the sampling valve pipeline in gas path switching device, for online just
Take the input carrier gas of formula gas chromatograph, the second carrier gas inlet 82 is connected with the sampling valve pipeline in gas path switching device, for
Online portable gas chromatograph input carrier gas, wherein, the carrier gas entered by each carrier gas inlet is used for will be in carrier gas inlet
The sample gas being enriched with corresponding example enrichment device, which is directed into component separating device, to be separated, and the component after separation is entered successively
Enter component detection means and be detected, the data that component detection means tests and analyzes out are carried out by data transmission device
Pass.
To sum up, the online portable gas chromatograph that the utility model embodiment provides includes：The import of sample gas, sample gas go out
Mouth, carrier gas inlet, sampling pump, gas path switching device, multiple example enrichment devices are (for example, the first example enrichment device and second
Example enrichment device), the total hydrocarbon separator of electric heating temperature control, the VOCs component separating devices of electric heating temperature control, multiple FID inspection
Survey device (for example, the first fid detector and second fid detector), multiple signal amplifiers (for example, the first signal amplifier and
Secondary signal amplifier), data processor, data transmission device, the online portable gas chromatograph is used for stationary source
And detected while NMHC and VOCs concentration of component in environmental gas.
Specifically, gas path switching device 20 is made up of the first magnetic valve 21, second solenoid valve 22 and sampling valve 23.First sample
Product enriching apparatus 31 is made up of enrichment trap casing 311, the 3rd electric heater 313 and adsorption tube 312.Second example enrichment device by
Enrichment trap casing 321, the 4th electric heater 323 and adsorption tube 322 form.The total hydrocarbon separator 41 of electric heating temperature control is by first
Miniature post case 411, the electric heater 412 of total hydrocarbon analytical column 413 and first form.The VOCs component separating devices 42 of electric heating temperature control
It is made up of the second miniature post case 412, VOCs components splitter 423 and the second electric heater 422.
Wherein, sample gas import 11 and sampling pump 12, the first magnetic valve 21, sampling valve 23, adsorption tube 312, adsorption tube 322,
Second solenoid valve 22, the composition sample gas path of sample gas outlet 60；It is first carrier gas inlet 71 and sampling valve 23, adsorption tube 312, total
Hydrocarbon analytical column 413, the first fid detector 51 composition sample introduction-total hydrocarbon separation gas passage；Second carrier gas inlet and sampling valve 23,
Adsorption tube 322, VOCs component analyses post 423, the second fid detector 53 composition sample introduction-VOCs components separation gas passage.
In another optional embodiment of the utility model embodiment, the online portable gas chromatograph also wraps
Include：Timing means and control device, wherein, timing means electrically connects with control device, at the end of timing means timing, control
Device controls online portable gas chromatograph to start to perform the operation of sample gas analysis, so that online portable gas chromatography
Instrument is analyzed sample gas automatically, and controls timing means to re-start timing.
Specifically, the online portable gas chromatograph that the utility model embodiment provides enables to staff carry-on
Carry, the online portable gas chromatograph can also be fixedly installed on some position.When by the online portable gas phase color
When spectrometer is fixedly installed on some position, a timing means can be set, the main function of the timing means is so that online
Portable gas chromatograph detects every preset time to the gas of online portable gas chromatograph local environment, its
In, preset time is the timing of timing means.
In another optional embodiment of the utility model embodiment, the online portable gas chromatograph also wraps
Include：Remote control, wherein, the remote control and control device wireless connection.Specifically, due to the diversity of detection environment, work
Online portable gas chromatograph may be placed on special position by making personnel, and the position is not easy to staff's entrance, this
When, staff can carry out real time remote control by the remote control to online portable gas chromatograph, for example, by distant
Controlling device controls online portable gas chromatograph to open and close, and the Working mould of the online portable gas chromatograph of selection
Formula, for example, first stage described below, sampling；Second stage, thermal desorption；Phase III, sample introduction.
In another optional embodiment of the utility model embodiment, the online portable gas chromatograph also wraps
Include：Display device, the display device are connected with component detection means, and the display device is arranged on the online portable gas phase color
On spectrometer, the analysis result for real-time display component detection means.By the display device, field personnel is enabled to
More intuitively obtain analysis result.
The operation principle of above-mentioned online portable gas chromatograph is specifically situated between with reference to Fig. 3 and Fig. 4 by specific below
Continue.The course of work for the online portable gas chromatograph that the utility model embodiment provides is broadly divided into three phases：Sampling,
Thermal desorption and sample introduction.
First stage：Sampling.
As shown in the direction of arrow in Fig. 3, sample gas is by external sampling probe or heat traced pipeline, by sample gas
Import 11, and enter pipe-line system under the suction of sampling pump 12.Then, sample gas import 11, sampling pump 12, first are passed sequentially through
Magnetic valve 21, sampling valve 23, adsorption tube 312 and adsorption tube 322.Most discharge system after second solenoid valve 22 and sample gas outlet 70 afterwards
System.
Second stage：Thermal desorption.
In the thermal desorption stage, the first magnetic valve 21 and second solenoid valve 22 are closed, and whole sample lines are closed in one
State.Now, the temperature of adsorption tube 312 and adsorption tube 322 rises rapidly to the final temperature of setting.Meanwhile it is enriched in first
Target compound in example enrichment device and the second example enrichment device is quickly desorbed out from the sorbing material in adsorption tube
Come.
Phase III：Sample introduction.
As shown in the direction of arrow in Fig. 4, in the sample introduction stage, sampling valve 23 is switched over, and carrier gas 1 is entered by the first carrier gas
The sample gas in adsorption tube 312 is imported into total hydrocarbon analytical column 413 after mouth 81, sampling valve 23；Enter the first flame ion afterwards
Change detector 51 (that is, first fid detector) and ionize and produce the first electric signal；First electric signal is put through the first signal
Big device 52, which carries out delivering to data processor 55 after conversion amplification, to be analyzed and processed.Meanwhile the second carrier gas inlet is passed through in carrier gas 2
82nd, the sample gas in adsorption tube 322 is imported into VOCs component analyses post 423 after sampling valve 23；Afterwards enter the second flame from
Sonization detector 53 (that is, second fid detector) simultaneously ionizes the second electric signal of generation, and second electric signal is through secondary signal
Amplifier 54, which carries out delivering to data processor 55 after conversion amplification, to be analyzed and processed, and the data after handling pass through data transfer
Device 60 is uploaded.
The online portable gas chromatograph that the utility model embodiment provides is easy to carry, and high sensitivity is reproducible,
It can be widely applied to implement Site Detection point to the NMHC in stationary source and surrounding air and VOCs concentration of component
All conglomeraties of analysis, have great economic benefit and social benefit.
The utility model has following remarkable advantage due to taking above technical scheme：
First, there is the online portable gas chromatograph adsorption tube example enrichment of DC heating function and desorption to fill
Put, substantially increase the sensitivity of instrument；
Second, the external sampling probe of the online portable gas chromatograph and heat traced pipeline are directly used in the collection of sample gas, complete
It is complete portable；
3rd, the online portable gas chromatograph onboard data processor, without outer dispensing computer；
4th, the online portable gas chromatograph onboard data transmitting device, the data of detection can be carried out in real time
Pass；
5th, the online portable gas chromatograph can analyze non-methane by the switching of sampling valve, single injected sampling
The concentration of total hydrocarbon and VOCs components, it is simple and convenient；
6th, the online portable gas chromatograph, as detector, can analyze gas chromatography, as a result using FID
Favorable reproducibility, inspection range are wide；
7th, the online portable gas chromatograph equipment instrument is small, it is compact-sized, in light weight, be convenient for carrying.
The utility model embodiment additionally provides a kind of environment monitoring device, and the environment monitoring device includes foregoing description
Online portable gas chromatograph., can be online portable in the device by being built in when using the environment monitoring device
Formula chromatographic goes out the concentration of NMHC and VOCs components, and in analysis, single injected sampling can be completed, operation letter
It is single convenient.
Finally it should be noted that：Various embodiments above is only to illustrate the technical solution of the utility model, rather than it is limited
System；Although the utility model is described in detail with reference to foregoing embodiments, one of ordinary skill in the art should
Understand：It can still modify to the technical scheme described in foregoing embodiments, either to which part or whole
Technical characteristic carries out equivalent substitution；And these modifications or replacement, the essence of appropriate technical solution is departed from this practicality newly
The scope of each embodiment technical scheme of type.
Claims (10)
- A kind of 1. online portable gas chromatograph, it is characterised in that including：Feed arrangement, gas path switching device, example enrichment Device, component separating device, component detection means, wherein,The input of the feed arrangement is used to gather sample gas, and the sample gas includes at least one of：It is described Indoor indoor gas residing for line portable gas chromatograph, outdoor outdoor gas residing for the online portable gas chromatograph Body, the gas of stationary source row's mouth discharge；The output end with the feed arrangement, the example enrichment device and the component separate the gas path switching device respectively Device is connected, and is separated for switching the sample gas in the feed arrangement, the example enrichment device and the component Flow direction in device；The quantity of the example enrichment device is multiple, for being enriched with the sample gasThe component separating device is connected by the gas path switching device with the example enrichment device, and the component point It is correspondingly arranged from device and the example enrichment device, for separating the sample gas being enriched with the example enrichment device Body, to obtain target compound；The component detection means is connected with the component separating device, for analyzing the target compound, obtains To analysis result.
- 2. online portable gas chromatograph according to claim 1, it is characterised in that the online portable gas phase color Spectrometer also includes：Data transmission device, wherein, the data transmission device and the component detection means are wired or wirelessly connect Connect, the result for analyzing to obtain the component detection means is transmitted to monitor terminal.
- 3. online portable gas chromatograph according to claim 1, it is characterised in that the example enrichment device bag Include：First example enrichment device and the second example enrichment device, the first example enrichment device and second example enrichment Device is connected with the gas path switching device.
- 4. online portable gas chromatograph according to claim 3, it is characterised in that each example enrichment device Including：Trap casing, adsorption tube and the 3rd electric heater are enriched with, wherein, adsorption tube and the 3rd electric heater are arranged at institute The inside of enrichment trap casing is stated, and the adsorption tube is connected with the gas path switching device.
- 5. online portable gas chromatograph according to claim 3, it is characterised in that the component separating device bag Include：Total hydrocarbon separator, the first end of the total hydrocarbon separator are connected with the gas path switching device, for enrichment Sample gas in the first example enrichment device is separated, with isolated first group of target compound；VOCs component separating devices, the first end of the VOCs component separating devices are connected with the gas path switching device, use Separated in the sample gas to being enriched in the second example enrichment device, with isolated second group of target chemical combination Thing, wherein, first group of target compound and second group of target compound are the compound differed.
- 6. online portable gas chromatograph according to claim 5, it is characterised in that the component detection means bag Include：First flame ionization detector, the first end of first flame ionization detector and the total hydrocarbon separator Second end is connected, for ionizing first group of target compound, to obtain the first electric signal；First signal amplifier, the first end of first signal amplifier and the second of first flame ionization detector End is connected, for being amplified to first electric signal；Second flame ionization detector, the first end of second flame ionization detector separate dress with the VOCs components The second end put is connected, for ionizing second group of target compound, to obtain the second electric signal；Secondary signal amplifier, the first end of the secondary signal amplifier and the second of second flame ionization detector End is connected, for being amplified to second electric signal；Data processor, the data processor are put with the second end of first signal amplifier and the secondary signal respectively Second end of big device is connected, for analyzing first electric signal after amplification, and to described in after amplification Second electric signal is analyzed.
- 7. online portable gas chromatograph according to claim 5, it is characterised in that the total hydrocarbon separator bag Include：First miniature post case, the first electric heater and total hydrocarbon analytical column, wherein, the total hydrocarbon analytical column fills with gas circuit switching Pipeline connection is put, first electric heater and the total hydrocarbon analytical column are arranged at the inside of the described first miniature post case；The VOCs component separating devices include：Second miniature post case, the second electric heater and VOCs component analysis posts, wherein, The VOCs component analyses post is connected with the gas path switching device pipeline, second electric heater and the VOCs components point Analysis post is arranged at the inside of the described second miniature post case.
- 8. online portable gas chromatograph according to claim 1, it is characterised in that the gas path switching device bag Include：First magnetic valve, first magnetic valve are connected by the first pipeline with the output end of the feed arrangement；Second solenoid valve, the second solenoid valve are connected by the second pipeline with the outlet of sample gas；Sampling valve, the sampling valve respectively with first magnetic valve, second solenoid valve, the example enrichment device and described group Divide the connection of separator pipeline；Wherein, when first magnetic valve and the second solenoid valve are in opening, and the sampling valve in first During state, the sample gas entered by the feed arrangement enters in the example enrichment device；When the described first electricity Magnet valve and the second solenoid valve are closed, and when the sampling valve is in the second state, are enriched in the sample Sample gas in enriching apparatus sequentially enters the component separating device and the component detection means is analyzed.
- 9. online portable gas chromatograph according to claim 1, it is characterised in that the online portable gas phase color Spectrometer also includes：Timing means and control device, wherein, the timing means electrically connects with the control device, when the timing means is determined When at the end of, the control device control online portable gas chromatograph starts to perform the behaviour of the sample gas analysis Make, so that the online portable gas chromatograph is analyzed the sample gas automatically, and control the timing means Re-start timing.
- 10. a kind of environment monitoring device, it is characterised in that including online portable any one of the claims 1 to 9 Formula gas chromatograph.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720324763.0U CN206638634U (en) | 2017-03-30 | 2017-03-30 | Online portable gas chromatograph and environment monitoring device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720324763.0U CN206638634U (en) | 2017-03-30 | 2017-03-30 | Online portable gas chromatograph and environment monitoring device |
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| Publication Number | Publication Date |
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| CN206638634U true CN206638634U (en) | 2017-11-14 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106770810A (en) * | 2017-03-30 | 2017-05-31 | 北京万维盈创科技发展有限公司 | Online portable gas chromatograph and environment monitoring device |
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2017
- 2017-03-30 CN CN201720324763.0U patent/CN206638634U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106770810A (en) * | 2017-03-30 | 2017-05-31 | 北京万维盈创科技发展有限公司 | Online portable gas chromatograph and environment monitoring device |
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