CN109900842A - A kind of Thermal desorption module of secondary parsing - Google Patents
A kind of Thermal desorption module of secondary parsing Download PDFInfo
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- CN109900842A CN109900842A CN201711302680.2A CN201711302680A CN109900842A CN 109900842 A CN109900842 A CN 109900842A CN 201711302680 A CN201711302680 A CN 201711302680A CN 109900842 A CN109900842 A CN 109900842A
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- thermal desorption
- adsorption tube
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Abstract
A kind of Thermal desorption module of secondary parsing, including first shell and second shell, it is characterised in that: the first shell and second shell are coupled by pipeline；Adsorption tube is equipped in the first shell；The first shell side is equipped with air inlet；Air inlet position is equipped with air compressor in the first shell；Described adsorption tube one end is coupled by electromagnetic valve with air compressor, and the other end couples with pipeline；Pressure monitor is equipped with adsorption tube coupled position inside the air compressor；The pressure monitor connection has controller；The switch of the controller control electromagnetic valve；It is equipped with multiple capillarys in the second shell and focuses pipe；It is mutually in parallel that multiple capillarys focus pipe；The capillary, which focuses the connection of pipe one end, pipeline, and the other end extends second shell external connection and is connected to gas-chromatography.
Description
Technical field
The present invention relates to Thermal desorption technologies, and in particular to a kind of Thermal desorption module of secondary parsing.
Background technique
Because the VOCs concentration in surrounding air is relatively low, the detection that the gas chromatograph of conventional type has been unable to satisfy benzene homologues is needed
It asks.
Thermal desorption module is increased in our company surrounding air VOCs detection system, in a manner of being enriched with concentration, increases target
The concentration of substance is detected, convenient for the detection of gas chromatography.Pyrolysis analyzer uses having for the glass tube capture filled with adsorbent
Machine compound, is then introduced into gas chromatograph, and by gas-chromatography, these organic compounds are separated and surveyed
It is fixed.It is sampled using large volume and compound is retained in the adsorption tube sampling pipe of high capacity, then heating is resolved to gas-chromatography
In instrument capillary column.In sampling process, due to being that large volume gas is pressed into chromatographic column, air pressure is larger and and unstable.
And chromatographic testing conditions are extremely harsh, different air pressures, which will lead to final analysis result, very big difference.Current is normal
Online Thermal desorption module is advised, is a Thermal desorption.But it is because admission pressure is big, and is the adsorption tube of high capacity, accuracy
It is less desirable.
Summary of the invention
The technical problem to be solved by the present invention for the above-mentioned state of the art is to provide one kind can secondary parsing raising
The Thermal desorption module of accuracy.
The technical scheme of the invention to solve the technical problem is:
A kind of Thermal desorption module of secondary parsing, including first shell and second shell, it is characterised in that: the first shell and
Second shell is coupled by pipeline；Adsorption tube is equipped in the first shell；The first shell side is equipped with air inlet；It is described
Air inlet position is equipped with air compressor in first shell；Described adsorption tube one end is joined by electromagnetic valve and air compressor
It connects, the other end couples with pipeline；Pressure monitor is equipped with adsorption tube coupled position inside the air compressor；The pressure
Monitor connection has controller；The switch of the controller control electromagnetic valve；It is poly- that multiple capillarys are equipped in the second shell
Jiao Guan；It is mutually in parallel that multiple capillarys focus pipe；The capillary, which focuses the connection of pipe one end, a pipeline, and the other end extends the
Two shell external connections are connected to gas-chromatography.
Further, the adsorption tube and capillary focus and are wound with empire silk outside pipe, are heated by empire silk.
Further, empire silk both ends external power supply.
Still further, the first shell and second shell are stainless steel material.
The beneficial effects of the present invention are: preset pressure value in the controller, air compressor compressed air, pressure monitor
Monitor pressure, and by real-time data transmission into controller, after reaching pressure value, controller opening electromagnetic valve, guarantee into
The air pressure for entering adsorption tube is maintained at default value.So that the sample gas that enrichment method is good, meeting and the external world before entering chromatographic column
Atmosphere is balanced, with guarantee each admission pressure as close possible to.The enrichment parsing of pipe second level is focused using capillary, it only need to be compared with
The analyte being enriched in capillary focusing pipe can be imported gas-chromatography by small load volume, improve sample introduction efficiency, and
Available sharp compound peak shape.Capillary focuses the interference that Manifold technology avoids water, enhances the analysis of polar compound.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the invention.
Specific embodiment
The embodiment of the present invention is described in further detail below in conjunction with attached drawing.
As shown in Figure 1, a kind of Thermal desorption module of secondary parsing, including first shell 1 and second shell 6, feature exists
In: the first shell 1 and second shell 6 pass through pipeline connection；Adsorption tube 2 is equipped in the first shell 1；The first shell
1 side of body is equipped with air inlet 5；5 position of air inlet is equipped with air compressor 4 in the first shell 1；Described 2 one end of adsorption tube
Coupled by electromagnetic valve 3 with air compressor 4, the other end couples with pipeline；4 inside of air compressor and adsorption tube 2
Coupled position is equipped with pressure monitor 7；The connection of pressure monitor 7 has controller；The controller control electromagnetic valve 3
Switch；Multiple capillarys, which are equipped with, in the second shell 6 focuses pipe 8；It is mutually in parallel that multiple capillarys focus pipe 8；The hair
The connection of 8 one end of fine focusing pipe has pipeline, and the other end extends 6 external connection of second shell and is connected to gas-chromatography.
Further, the adsorption tube 2 and capillary focus and are wound with empire silk outside pipe 8, are heated by empire silk.
Further, empire silk both ends external power supply.
Still further, the first shell 1 and second shell 6 are stainless steel material.
The beneficial effects of the present invention are: preset pressure value in the controller, air compressor compressed air, pressure monitor
Monitor pressure, and by real-time data transmission into controller, after reaching pressure value, controller opening electromagnetic valve, guarantee into
The air pressure for entering adsorption tube is maintained at default value.So that the sample gas that enrichment method is good, meeting and the external world before entering chromatographic column
Atmosphere is balanced, with guarantee each admission pressure as close possible to.The enrichment parsing of pipe second level is focused using capillary, it only need to be compared with
The analyte being enriched in capillary focusing pipe can be imported gas-chromatography by small load volume, improve sample introduction efficiency, and
Available sharp compound peak shape.Capillary focuses the interference that Manifold technology avoids water, enhances the analysis of polar compound.
The above is only the preferred embodiment of the present invention, protection scope of the present invention is not limited merely to above-described embodiment,
All technical solutions belonged under thinking of the present invention all belong to the scope of protection of the present invention.It should be pointed out that for the art
For those of ordinary skill, several improvements and modifications without departing from the principles of the present invention should be regarded as protection of the invention
Range.
Claims (4)
1. a kind of Thermal desorption module of secondary parsing, including first shell (1) and second shell (6), it is characterised in that: described
One shell (1) and second shell (6) are coupled by pipeline；Adsorption tube (2) are equipped in the first shell (1)；The first shell
Body (1) side is equipped with air inlet (5)；The interior air inlet of the first shell (1) (5) position is equipped with air compressor (4)；The suction
Attached pipe (2) one end is coupled by electromagnetic valve (3) with air compressor (4), and the other end couples with pipeline；The air compressor
(4) internal to be equipped with pressure monitor (7) with adsorption tube (2) coupled position；Pressure monitor (7) connection has controller；Institute
State the switch of controller control electromagnetic valve (3)；It is equipped with multiple capillarys in the second shell (6) and focuses pipe (8)；It is multiple described
It is mutually in parallel that capillary focuses pipe (8)；The capillary, which focuses the connection of pipe (8) one end, pipeline, and the other end extends second shell
(6) external connection is connected to gas-chromatography.
2. a kind of Thermal desorption module of secondary parsing as described in claim 1, it is characterised in that: the adsorption tube (2) and hair
Fine focusing pipe (8) is wound with empire silk outside, is heated by empire silk.
3. a kind of Thermal desorption module of secondary parsing as claimed in claim 2, it is characterised in that: the empire silk both ends are external
Power supply.
4. a kind of Thermal desorption module of secondary parsing as described in claim 1, it is characterised in that: the first shell (1) and
Second shell (6) is stainless steel material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711302680.2A CN109900842A (en) | 2017-12-08 | 2017-12-08 | A kind of Thermal desorption module of secondary parsing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711302680.2A CN109900842A (en) | 2017-12-08 | 2017-12-08 | A kind of Thermal desorption module of secondary parsing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109900842A true CN109900842A (en) | 2019-06-18 |
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| CN201711302680.2A Pending CN109900842A (en) | 2017-12-08 | 2017-12-08 | A kind of Thermal desorption module of secondary parsing |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040035183A1 (en) * | 2000-01-25 | 2004-02-26 | The State Of Oregon Acting And Through The State Board Of Higher Education On Behalf Of Portl | Method and apparatus for sample analysis |
| CN101294936A (en) * | 2007-04-25 | 2008-10-29 | 中国科学院沈阳应用生态研究所 | Plant source volatile organic matter test method |
| CN205749410U (en) * | 2016-06-07 | 2016-11-30 | 绍兴国正安全技术检测有限公司 | A kind of gas chromatograph |
| CN106596782A (en) * | 2016-12-22 | 2017-04-26 | 汇众翔环保科技河北有限公司 | On-line monitoring system and analysis method for volatile organic compounds |
| KR20170092723A (en) * | 2016-02-03 | 2017-08-14 | (주) 에이스엔 | Ambient air monitoring system and method using sensor and gas chromatography |
-
2017
- 2017-12-08 CN CN201711302680.2A patent/CN109900842A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040035183A1 (en) * | 2000-01-25 | 2004-02-26 | The State Of Oregon Acting And Through The State Board Of Higher Education On Behalf Of Portl | Method and apparatus for sample analysis |
| CN101294936A (en) * | 2007-04-25 | 2008-10-29 | 中国科学院沈阳应用生态研究所 | Plant source volatile organic matter test method |
| KR20170092723A (en) * | 2016-02-03 | 2017-08-14 | (주) 에이스엔 | Ambient air monitoring system and method using sensor and gas chromatography |
| CN205749410U (en) * | 2016-06-07 | 2016-11-30 | 绍兴国正安全技术检测有限公司 | A kind of gas chromatograph |
| CN106596782A (en) * | 2016-12-22 | 2017-04-26 | 汇众翔环保科技河北有限公司 | On-line monitoring system and analysis method for volatile organic compounds |
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