CN206683905U - Atmospheric volatile organic compounds twin-stage deep cooling on-line preconcentration concentrates sampling system - Google Patents
Atmospheric volatile organic compounds twin-stage deep cooling on-line preconcentration concentrates sampling system Download PDFInfo
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- CN206683905U CN206683905U CN201720270870.XU CN201720270870U CN206683905U CN 206683905 U CN206683905 U CN 206683905U CN 201720270870 U CN201720270870 U CN 201720270870U CN 206683905 U CN206683905 U CN 206683905U
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- 238000001816 cooling Methods 0.000 title claims abstract description 59
- 238000005070 sampling Methods 0.000 title claims abstract description 47
- 239000012855 volatile organic compound Substances 0.000 title claims abstract description 36
- 238000004094 preconcentration Methods 0.000 title claims abstract description 29
- 239000012141 concentrate Substances 0.000 title claims description 14
- 238000002347 injection Methods 0.000 claims abstract description 28
- 239000007924 injection Substances 0.000 claims abstract description 28
- 238000010438 heat treatment Methods 0.000 claims abstract description 20
- 238000009413 insulation Methods 0.000 claims abstract description 20
- 239000002184 metal Substances 0.000 claims description 23
- 229910052751 metal Inorganic materials 0.000 claims description 23
- 238000010926 purge Methods 0.000 claims description 17
- 229920000742 Cotton Polymers 0.000 claims description 9
- 238000004321 preservation Methods 0.000 claims description 9
- 210000002445 nipple Anatomy 0.000 claims description 5
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims 1
- 239000010931 gold Substances 0.000 claims 1
- 229910052737 gold Inorganic materials 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 23
- 239000005416 organic matter Substances 0.000 abstract description 12
- 238000000642 dynamic headspace extraction Methods 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 64
- 230000008569 process Effects 0.000 description 17
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 230000005611 electricity Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000003463 adsorbent Substances 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000003795 desorption Methods 0.000 description 2
- 238000011065 in-situ storage Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 230000005526 G1 to G0 transition Effects 0.000 description 1
- 241001465754 Metazoa Species 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000000443 aerosol Substances 0.000 description 1
- 239000000926 atmospheric chemistry Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000005436 troposphere Substances 0.000 description 1
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- Sampling And Sample Adjustment (AREA)
Abstract
The utility model discloses a kind of atmospheric volatile organic compounds twin-stage deep cooling on-line preconcentration concentration sampling system and method.Atmospheric volatile organic compounds twin-stage deep cooling on-line preconcentration concentration sampling system includes double-channel gas trapping system, twin-stage deep cooling concentration systems, on-line sample analysis system, super rapid heating circuit system, insulation note sample air-channel system and reverse blow air-channel system.The twin-stage deep cooling concentration systems have deep cooling cavity；The double-channel gas trapping system includes two gas trapping passages, can switch capturing volatile organic matter.Insulation note sample air-channel system has a sample injection sample introduction pipeline, two second level trap tubes with institute sample injection sample introduction pipeline is changeable connects, sample injection sample introduction pipeline connects with the on-line sample analysis system；Super rapid heating circuit system is used to carry out temperature control to first order trap tube, second level trap tube；Reverse blow air-channel system is used for purge and trap pipe.The system disclosure satisfy that live on-line checking demand.
Description
Technical field
Gas enrichment field is the utility model is related to, it is online more particularly to a kind of atmospheric volatile organic compounds twin-stage deep cooling
Enrichment concentration sampling system.
Background technology
Volatile organic matter is prevalent in air, is the pass for generating troposphere atmospheric ozone and secondary organic aerosol
Key precursor, Atmospheric Photochemical Smog can be caused to produce, Health cost is produced to animals and plants；Also human body can be directly entered and produce danger
Evil.The current atmospheric volatile organic compounds method of sampling is mainly sampled offline with adsorbent, and reusable heat desorption instrument is desorbed
Sample introduction.But there is the absorption and desorption efficiency to component in adsorbent sampling, time efficiency is low, and this method is only always
Sampling and sample introduction offline can be carried out, live on-line checking demand and Atmospheric Chemistry change procedure research needs can not be met.
Utility model content
Based on this, it is necessary to it is deep to provide a kind of atmospheric volatile organic compounds twin-stage that disclosure satisfy that live on-line checking demand
Cold on-line preconcentration concentrates sampling system.
A kind of atmospheric volatile organic compounds twin-stage deep cooling on-line preconcentration concentrates sampling system, including double-channel gas trapping system
System, acquisition system, twin-stage deep cooling concentration systems, on-line sample analysis system, super rapid heating circuit system, insulation note sample gas circuit
System and reverse blow air-channel system；The twin-stage deep cooling concentration systems have deep cooling cavity；
The acquisition system has the multidigit switching multiple-way valve being sequentially communicated, mass flow control meter, sampling pump and gas
Body outlet pipeline；
The double-channel gas trapping system includes two-bit triplet magnetic valve, multidigit switch sampling valve, three sample introduction gases
Entrance pipe and two gas trapping passages；Three sample introduction gas inlet lines respectively with the multidigit switch sampling valve
Connect to be respectively used to be passed through atmospheric sample, external sample and internal standard sample；Each gas trapping passage be respectively provided with according to
The secondary first order trap tube being linked in sequence, second level trap tube, the second level trap tube of two gas trapping passages are in parallel
It is communicated in the multidigit switching multiple-way valve；Two first order trap tubes are connected to a two-bit triplet electromagnetism
Valve, two two-bit triplet magnetic valves are connected to gas discharge outlet pipeline, two two-bit triplet magnetic valves commonly through
Another described two-bit triplet magnetic valve is connected with the multidigit switch sampling valve to realize two gas trapping passages
Switching；The first order trap tube and the second level trap tube are located in the deep cooling cavity；
The insulation note sample air-channel system has sample injection sample introduction pipeline, and the sample injection sample introduction pipeline is communicated in institute
Multidigit switching multiple-way valve is stated, the sample injection sample introduction pipeline connects with the on-line sample analysis system；The multidigit switching
Multiple-way valve can realize that first second level trap tube and the mass flow control meter connect and second described second
Level trap tube and the sample injection sample introduction pipeline connection, or second second level trap tube and the mass flow control
The connection of system meter and first second level trap tube and the sample injection sample introduction pipeline connection；
The super rapid heating circuit system has METAL HEATING PROCESS sleeve pipe, the first temperature sensor and temperature adjustable electricity
The outside of road, the first order trap tube and the second level trap tube is arranged with the METAL HEATING PROCESS sleeve pipe, Ge Gesuo
State and the first temperature sensor is equipped with METAL HEATING PROCESS sleeve pipe, the temperature adjustable circuit is connected to the first order trap tube
And the second level trap tube is for the first order trap tube and second level trap tube progress temperature control；
The reverse blow air-channel system includes purge gas entrance pipe, and the purge gas entrance pipe can be distinguished
With two second level trap tube Opposite direction connections.
In one of the embodiments, also there is the insulation note sample air-channel system immerging metal tube heater and second temperature to pass
Sensor, the immerging metal tube heater are set in the outside of the sample injection sample introduction pipeline, and the second temperature sensor is located at institute
State in immerging metal tube heater.
In one of the embodiments, the insulation note sample air-channel system also has heat-insulation layer, and the heat-insulation layer is wrapped in
The outside of the immerging metal tube heater.
In one of the embodiments, the sample injection sample introduction pipeline connects towards one end of the second level trap tube
There is a two-bit triplet magnetic valve, the sample injection sample introduction pipeline passes through the two-bit triplet magnetic valve and corresponding described second
Level trap tube connection.
In one of the embodiments, in the first order trap tube and it is respectively provided with stationary phase in the trap tube of the second level and fills out
Material.
In one of the embodiments, the twin-stage deep cooling concentration systems also have without dead volume seal nipple, and described the
By the no dead volume seal nipple, the two-bit triplet is electric accordingly for one-level trap tube and the second level trap tube
Magnet valve connects.
In one of the embodiments, the twin-stage deep cooling concentration systems also have heat-preservation cotton layer, and the heat-preservation cotton layer is set
On the inwall of deep cooling cavity, the thickness of the heat-preservation cotton layer is 60mm.
In one of the embodiments, the reverse blow air-channel system also includes two-bit triplet magnetic valve, this two three
The entrance of three-way electromagnetic valve is connected with the purge gas entrance pipe, two of two-bit triplet magnetic valve outlets respectively with two
Second level trap tube Opposite direction connection.
Above-mentioned atmospheric volatile organic compounds twin-stage deep cooling on-line preconcentration concentration sampling system, employs double-channel gas and catches
Collecting system, twin-stage deep cooling concentration systems, wherein gas trapping passage carry out gaseous sample trapping process, secondary focusing mistake
After journey, parsing sample introduction process, reverse blow process, cooling standby, and when carrying out the secondary focusing process of next cycle,
Another gas trapping passage can carry out gaseous sample trapping process simultaneously, and by that analogy, double-channel gas trapping system is true
Guarantor is fully trapped to volatile organic matter, improves the arresting efficiency of atmospheric volatile organic compounds.Above-mentioned air volatilization
Property organic matter twin-stage deep cooling on-line preconcentration concentration sampling system can be combined with volatile organic matter detecting instrument, to realizing environment
Real-time, the on-line checking of volatile organic trace compounds have great importance in air, and the system can be effectively to atmospheric volatile
Organic matter is adsorbed and is enriched with, efficiently quick pollution-free without discrimination, and sample introduction can be combined online with on-line checking instrument,
Realize the on-line analysis in situ to atmospheric volatile organic compounds.
Brief description of the drawings
Fig. 1 is the gas trapping mistake that an embodiment atmospheric volatile organic compounds twin-stage deep cooling on-line preconcentration concentrates sampling system
Journey principle schematic；
Fig. 2 is the secondary focusing mistake that atmospheric volatile organic compounds twin-stage deep cooling on-line preconcentration shown in Fig. 1 concentrates sampling system
Journey principle schematic；
Fig. 3 is the parsing sample introduction mistake that atmospheric volatile organic compounds twin-stage deep cooling on-line preconcentration shown in Fig. 1 concentrates sampling system
Journey principle schematic；
Fig. 4 is the analysis blowback that atmospheric volatile organic compounds twin-stage deep cooling on-line preconcentration shown in Fig. 1 concentrates sampling system
Journey principle schematic；
Fig. 5 is the standby mistake of cooling that atmospheric volatile organic compounds twin-stage deep cooling on-line preconcentration shown in Fig. 1 concentrates sampling system
Journey principle schematic.
Description of reference numerals
10th, atmospheric volatile organic compounds twin-stage deep cooling on-line preconcentration concentration sampling system；100th, double-channel gas trapping system
System；110th, two-bit triplet magnetic valve；120th, multidigit switch sampling valve；131st, 132,133, sample introduction gas inlet line；140th, gas
Body traps passage；141st, first order trap tube；142nd, second level trap tube；200th, acquisition system；210th, mass flow control meter；
220th, sampling pump；230th, gas discharge outlet pipeline；300th, deep cooling cavity；400th, on-line sample analysis system；500th, it is supper-fast to add
Heater circuit system；510th, METAL HEATING PROCESS sleeve pipe；520th, the first temperature sensor；600th, insulation note sample air-channel system；610th, sample
Sample injection pipeline；620th, immerging metal tube heater；630th, second temperature sensor；700th, purge gas entrance pipe.
Embodiment
For the ease of understanding the utility model, the utility model is more fully retouched below with reference to relevant drawings
State.Preferred embodiment of the present utility model is given in accompanying drawing.But the utility model can come in fact in many different forms
It is existing, however it is not limited to embodiment described herein.On the contrary, the purpose for providing these embodiments is made to public affairs of the present utility model
Open the understanding more thorough and comprehensive of content.
It should be noted that when element is referred to as " being fixed on " another element, it can be directly on another element
Or there may also be element placed in the middle.When an element is considered as " connection " another element, it can be directly connected to
To another element or it may be simultaneously present centering elements.
Unless otherwise defined, all of technologies and scientific terms used here by the article is led with belonging to technology of the present utility model
The implication that the technical staff in domain is generally understood that is identical.It is simply in term used in the description of the present utility model herein
The purpose of description specific embodiment, it is not intended that in limitation the utility model.Term as used herein "and/or" includes
The arbitrary and all combination of one or more related Listed Items.
Shown in Figure 1, the present embodiment relate to a kind of atmospheric volatile organic compounds twin-stage deep cooling on-line preconcentration concentration and adopt
Sample system 10.Atmospheric volatile organic compounds twin-stage deep cooling on-line preconcentration concentration sampling system 10 includes double-channel gas trapping system
System 100, acquisition system 200, twin-stage deep cooling concentration systems, on-line sample analysis system 400, super rapid heating circuit system 500,
Insulation note sample air-channel system 600 and reverse blow air-channel system.
Shown in Figure 1, the acquisition system 200 has the multidigit switching multiple-way valve being sequentially communicated, mass flow control
Meter 210, sampling pump 220 and gas discharge outlet pipeline 230.
Shown in Figure 1, the double-channel gas trapping system 100 includes two-bit triplet magnetic valve 110, multidigit is switched into
120, three sample introduction gas inlet lines 131,132,133 of sample valve and two gas trapping passages 140.Three sample introduction gas
Body entrance pipe 131,132,133 is connected with the multidigit switch sampling valve 120 to be respectively used to be passed through atmospheric sample, outer respectively
Standard specimen product and internal standard sample, atmospheric sample are used to be passed through atmospheric volatile organic compounds, and external sample, internal standard sample are such as passed through mark
Quasi- sample is for specified value curve.The gas trapping passage 140 has the first order trap tube being linked in sequence successively
141st, second level trap tube 142.Two parallel communications of second level trap tube 142 switch multiple-way valve in the multidigit.First
Level trap tube 141, second level trap tube 142 are made of special metal pipe-wall material, size adjustable, it is ensured that to volatility
Organic matter is fully trapped.Fixed phase stuffing is respectively provided with the first order trap tube and in the trap tube of the second level.
Referring to shown in Fig. 1 and Fig. 2, two first order trap tubes 141 are connected to a two-bit triplet electricity
Magnet valve 110, two two-bit triplet magnetic valves 110 are connected to gas discharge outlet pipeline 230, two two-bit triplet electromagnetism
Valve 110 is connected to realize two commonly through two-bit triplet magnetic valve 110 another described with the multidigit switch sampling valve 120
The switching of the gas trapping passage 140.
Referring to shown in Fig. 1 and Fig. 2, the twin-stage deep cooling concentration systems have deep cooling cavity 300.The twin-stage deep cooling concentration
System also has without dead volume seal nipple.The first order trap tube 141 and the second level trap tube 142 are positioned at described
In deep cooling cavity 300.The first order trap tube 141 and the second level trap tube 142 are close by the no dead volume
The two-bit triplet magnetic valve 110 connects sealing joint accordingly.The twin-stage deep cooling concentration systems also have heat-preservation cotton layer (accompanying drawing
Not shown in).The heat-preservation cotton layer is located on the inwall of deep cooling cavity 300, and the thickness of the heat-preservation cotton layer is 60mm.
Referring to shown in Fig. 1-Fig. 3, the insulation note sample air-channel system 600 has sample injection sample introduction pipeline 610.The sample
Product sample injection pipeline 610 connects and multidigit switching multiple-way valve, the sample injection sample introduction pipeline 610 and the online sample
Product analysis system 400 connects.The multidigit switching multiple-way valve can realize first second level trap tube and the quality
Flow control meter 210 connects and second second level trap tube connects with the sample injection sample introduction pipeline 610, Huo Zhe
Two second level trap tubes and the mass flow control meter 210 connect and first second level trap tube with it is described
Sample injection sample introduction pipeline 610 connects.
Referring to shown in Fig. 1-Fig. 3, further, the sample injection sample introduction pipeline 610 is towards the second level trap tube
142 one end is connected with a two-bit triplet magnetic valve 110, and the sample injection sample introduction pipeline 610 passes through two-bit triplet electricity
Magnet valve 110 connects with the corresponding second level trap tube 142.
Referring to shown in Fig. 1-Fig. 3, further, the insulation note sample air-channel system 600 also have immerging metal tube heater 620 with
And second temperature sensor 630.The immerging metal tube heater 620 is set in the outside of the sample injection sample introduction pipeline 610, described
Second temperature sensor 630 is located in the immerging metal tube heater 620.
Further, the insulation note sample air-channel system 600 also has heat-insulation layer, and the heat-insulation layer is wrapped in the metal
The outside of heating tube 620.
Referring to shown in Fig. 1-Fig. 3, the super rapid heating circuit system 500 has METAL HEATING PROCESS sleeve pipe 510, the first temperature
Sensor 520 and temperature adjustable circuit.The outside of the first order trap tube 141 and the second level trap tube 142
It is arranged with the METAL HEATING PROCESS sleeve pipe 510.The first temperature sensor 520 is equipped with each METAL HEATING PROCESS sleeve pipe 510.
The temperature adjustable circuit is connected to the first order trap tube 141 and the second level trap tube 142 for institute
State first order trap tube 141 and the second level trap tube 142 carries out temperature control.
Referring to shown in Fig. 1-Fig. 3, the reverse blow air-channel system includes purge gas entrance pipe 700.The purging
Gas inlet line 700 can respectively with two Opposite direction connections of second level trap tube 142.Further, the reverse blow gas
Road system also includes two-bit triplet magnetic valve 110, the entrance of the two-bit triplet magnetic valve 110 and the purge gas entrance pipe
700 connections, two of the two-bit triplet magnetic valve 110 outlets respectively with two Opposite direction connections of second level trap tube 142.It is described to blow
Sweep and nitrogen, dry air or helium are passed through in gas inlet line 700.Specifically, in the present embodiment, purge gass are nitrogen.
The atmospheric volatile organic compounds twin-stage deep cooling on-line preconcentration concentration sampling system 10 that the present embodiment is related to, is being used
When, it relate to a kind of atmospheric volatile organic compounds twin-stage deep cooling on-line preconcentration concentration method of sampling.
Referring to shown in Fig. 1-Fig. 5, a kind of atmospheric volatile organic compounds twin-stage deep cooling on-line preconcentration concentrates the method for sampling, including
Following steps：
It is shown in Figure 1, gaseous sample trapping process：Select one of gas of double-channel gas trapping system 100
Trap passage 140 carry out gaseous sample trapping, the gas trapping passage 140 interval trapping and the gas trapping passage 140 once
Total cleaning cycle is equal to an analytical cycle of another gas trapping passage 140, the gas trapping of the gas trapping passage 140
During first order trap tube 141 and second level trap tube 142 be in subzero 160 DEG C, gaseous sample passes through sample introduction gas
Body entrance pipe 131,132,133 and multidigit switch sampling valve 120 enter in the first order trap tube 141, and described first
Level trap tube 141 is realized freezes enrichment to the first time of the volatile organic matter in the gaseous sample.
It is shown in Figure 2, secondary focusing process：It is rich to complete freezing of the gaseous sample in first order trap tube 141
After collection, the temperature of first order trap tube 141 of the gas trapping passage 140 is increased to subzero 15 with 50 DEG C of speed per second
DEG C, while the temperature of second level trap tube 142 of the gas trapping passage 140 is maintained at subzero 160 DEG C, volatility is organic
Thing is gasified totally and entered in the second level trap tube 142, and the moisture content of the gaseous sample remains in first order trap tube 141
In, realize the time condensation focusing to volatile organic matter.
It is shown in Figure 3, parse sample introduction process：The temperature of second level trap tube 142 of the gas trapping passage 140 is with 100
DEG C speed per second is quickly increased to the temperature of 150 DEG C or more than 150 DEG C, by the volatility in the second level trap tube 142
The supper-fast gasification of organic matter, and it is online into progress in on-line sample analysis system 400 by being incubated note sample air-channel system 600
Analysis.The workflow parameters of the control system of on-line sample analysis system 400 export with data result.
It is shown in Figure 4, reverse blow process：By the purge gas entrance pipe 700 of reverse blow air-channel system with being somebody's turn to do
The second level trap tube 142 of gas trapping passage 140 connects, by the purge gas entrance pipe 700 to this second
Purge gas is passed through in level trap tube 142 and the first order trap tube 141, the first order trap tube 141 and described
Second level trap tube 142 is heated to more than 200 DEG C, by purge gas by the first order trap tube 141 and described
The gas discharge outlet pipeline 230 that residue in two level trap tube 142 passes through purges away.
Shown in Figure 5, cool standby：Purge gas entrance pipe 700 is closed, the gas trapping passage 140
The first order trap tube 141, the second level trap tube 142 are cooled to subzero 160 DEG C, so that next cycle traps sample
When it is stand-by.
Switching channel sampling process：Trap and open in the gaseous sample of the above-mentioned gas trapping completion a cycle of passage 140
During beginning secondary focusing process, another gas trapping passage 140 proceeds by the gaseous sample trapping process of next cycle, with
This analogizes, until gaseous sample trapping terminates.
Above-mentioned atmospheric volatile organic compounds twin-stage deep cooling on-line preconcentration concentration sampling system 10, employs double-channel gas
Trapping system 100, twin-stage deep cooling concentration systems, wherein gas trapping passage 140 carry out gaseous sample trapping process, two
After secondary focusing, parsing sample introduction process, reverse blow process, cooling standby, and carry out the secondary poly- of next cycle
During burnt process, another gas trapping passage 140 can carry out gaseous sample trapping process, by that analogy, binary channels gas simultaneously
Body trapping system 100 ensures fully to trap volatile organic matter, improves the arresting efficiency of atmospheric volatile organic compounds.
Above-mentioned atmospheric volatile organic compounds twin-stage deep cooling on-line preconcentration concentration sampling system 10 can be with volatile organic matter detector
Device is combined, to realizing that real-time, the on-line checking of volatile organic trace compounds in surrounding air have great importance, the system energy
Effectively atmospheric volatile organic compounds are adsorbed and are enriched with, efficiently quick pollution-free without discrimination, and can online sample introduction and
On-line checking instrument is combined, and realizes the on-line analysis in situ to atmospheric volatile organic compounds.
Each technical characteristic of embodiment described above can be combined arbitrarily, to make description succinct, not to above-mentioned reality
Apply all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, the scope that this specification is recorded all is considered to be.
Embodiment described above only expresses several embodiments of the present utility model, and its description is more specific and detailed,
But therefore it can not be interpreted as the limitation to the utility model patent scope.It should be pointed out that for the common of this area
For technical staff, without departing from the concept of the premise utility, various modifications and improvements can be made, these all belong to
In the scope of protection of the utility model.Therefore, the protection domain of the utility model patent should be determined by the appended claims.
Claims (8)
1. a kind of atmospheric volatile organic compounds twin-stage deep cooling on-line preconcentration concentrates sampling system, it is characterised in that including binary channels
Gas capture system, acquisition system, twin-stage deep cooling concentration systems, on-line sample analysis system, super rapid heating circuit system, guarantor
Temperature note sample air-channel system and reverse blow air-channel system；The twin-stage deep cooling concentration systems have deep cooling cavity；
The acquisition system has the multidigit switching multiple-way valve being sequentially communicated, mass flow control meter, sampling pump and gas row
Export pipeline；
The double-channel gas trapping system includes two-bit triplet magnetic valve, multidigit switch sampling valve, three sample introduction gas accesses
Pipeline and two gas trapping passages；Three sample introduction gas inlet lines are connected with the multidigit switch sampling valve respectively
To be respectively used to be passed through atmospheric sample, external sample and internal standard sample；Each gas trapping passage is respectively provided with suitable successively
First order trap tube, the second level trap tube of sequence connection, the second level trap tube parallel communication of two gas trapping passages
Switch multiple-way valve in the multidigit；Two first order trap tubes are connected to a two-bit triplet magnetic valve, should
Two two-bit triplet magnetic valves are connected to gas discharge outlet pipeline, and two two-bit triplet magnetic valves are commonly through another
The two-bit triplet magnetic valve is connected with the multidigit switch sampling valve to realize the switching of two gas trapping passages；Institute
State first order trap tube and the second level trap tube is located in the deep cooling cavity；
The insulation note sample air-channel system has sample injection sample introduction pipeline, and the sample injection sample introduction pipeline is communicated in described more
Position switching multiple-way valve, the sample injection sample introduction pipeline connect with the on-line sample analysis system；The multidigit switching is more logical
Valve can realize that first second level trap tube is connected with mass flow control meter and second second level is caught
Collector and the sample injection sample introduction pipeline connection, or second second level trap tube are counted with mass flow control
Connection and first second level trap tube and the sample injection sample introduction pipeline connection；
The super rapid heating circuit system has METAL HEATING PROCESS sleeve pipe, the first temperature sensor and temperature adjustable circuit,
The outside of the first order trap tube and the second level trap tube is arranged with the METAL HEATING PROCESS sleeve pipe, each gold
Be equipped with the first temperature sensor in category heating muff, the temperature adjustable circuit be connected to the first order trap tube and
The second level trap tube is for the first order trap tube and second level trap tube progress temperature control；
The reverse blow air-channel system includes purge gas entrance pipe, and the purge gas entrance pipe can be respectively with two
Individual second level trap tube Opposite direction connection.
2. atmospheric volatile organic compounds twin-stage deep cooling on-line preconcentration according to claim 1 concentrates sampling system, its feature
It is, the insulation note sample air-channel system also has immerging metal tube heater and second temperature sensor, the METAL HEATING PROCESS pipe sleeve
The outside of the sample injection sample introduction pipeline is located at, the second temperature sensor is located in the immerging metal tube heater.
3. atmospheric volatile organic compounds twin-stage deep cooling on-line preconcentration according to claim 2 concentrates sampling system, its feature
It is, the insulation note sample air-channel system also has heat-insulation layer, and the heat-insulation layer is wrapped in the outside of the immerging metal tube heater.
4. atmospheric volatile organic compounds twin-stage deep cooling on-line preconcentration according to claim 2 concentrates sampling system, its feature
It is, one end of the sample injection sample introduction pipeline towards the second level trap tube is also connected with a two-bit triplet electromagnetism
Valve, the sample injection sample introduction pipeline are connected by the two-bit triplet magnetic valve with the corresponding second level trap tube.
5. the atmospheric volatile organic compounds twin-stage deep cooling on-line preconcentration concentration sampling system according to claim 1-4 any one
System, it is characterised in that be respectively provided with fixed phase stuffing in the first order trap tube and in the trap tube of the second level.
6. the atmospheric volatile organic compounds twin-stage deep cooling on-line preconcentration concentration sampling system according to claim 1-4 any one
System, it is characterised in that the twin-stage deep cooling concentration systems also have without dead volume seal nipple, the first order trap tube and
By the no dead volume seal nipple, the two-bit triplet magnetic valve connects the second level trap tube accordingly.
7. the atmospheric volatile organic compounds twin-stage deep cooling on-line preconcentration concentration sampling system according to claim 1-4 any one
System, it is characterised in that the twin-stage deep cooling concentration systems also have heat-preservation cotton layer, and the heat-preservation cotton layer is located at the interior of deep cooling cavity
On wall, the thickness of the heat-preservation cotton layer is 60mm.
8. the atmospheric volatile organic compounds twin-stage deep cooling on-line preconcentration concentration sampling system according to claim 1-4 any one
System, it is characterised in that the reverse blow air-channel system also includes two-bit triplet magnetic valve, the entrance of the two-bit triplet magnetic valve
It is connected with the purge gas entrance pipe, two outlets of the two-bit triplet magnetic valve are anti-with two second level trap tubes respectively
To connection.
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| CN201720270870.XU CN206683905U (en) | 2017-03-20 | 2017-03-20 | Atmospheric volatile organic compounds twin-stage deep cooling on-line preconcentration concentrates sampling system |
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| CN201720270870.XU CN206683905U (en) | 2017-03-20 | 2017-03-20 | Atmospheric volatile organic compounds twin-stage deep cooling on-line preconcentration concentrates sampling system |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107991278A (en) * | 2017-12-28 | 2018-05-04 | 湖南华南光电科技股份有限公司 | Heating sampling structure based on fluorescent quenching technology trace explosive detector |
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2017
- 2017-03-20 CN CN201720270870.XU patent/CN206683905U/en not_active Withdrawn - After Issue
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| CN108627369A (en) * | 2017-03-20 | 2018-10-09 | 广州禾信仪器股份有限公司 | Atmospheric volatile organic compounds twin-stage deep cooling on-line preconcentration concentrates sampling system and method |
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| CN107991278A (en) * | 2017-12-28 | 2018-05-04 | 湖南华南光电科技股份有限公司 | Heating sampling structure based on fluorescent quenching technology trace explosive detector |
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| CN110274813A (en) * | 2018-03-14 | 2019-09-24 | 广州禾信仪器股份有限公司 | Volatile organic matter enriching apparatus and method |
| CN110308211A (en) * | 2018-03-20 | 2019-10-08 | 广州禾信仪器股份有限公司 | Volatile organic matter on-line detector and method |
| CN108562666A (en) * | 2018-04-25 | 2018-09-21 | 上海磐合科学仪器股份有限公司 | Complete online pre-concentration gas-chromatography-flight time mass spectrum monitoring system and its application |
| CN113466369A (en) * | 2021-06-30 | 2021-10-01 | 复旦大学 | Online VOCs rapid monitoring system and method based on double cold traps preconcentration and flight time mass spectrum |
| CN114383788A (en) * | 2022-01-18 | 2022-04-22 | 江苏华安科研仪器有限公司 | Dense shale hydrocarbon cryogenic trap |
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