CN207472838U - 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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- CN207472838U CN207472838U CN201721695228.2U CN201721695228U CN207472838U CN 207472838 U CN207472838 U CN 207472838U CN 201721695228 U CN201721695228 U CN 201721695228U CN 207472838 U CN207472838 U CN 207472838U
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- shell
- pipe
- thermal desorption
- adsorption tube
- pipeline
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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；Inside the air compressor pressure monitor is equipped with adsorption tube coupled position；The pressure monitor connection has controller；The switch of the controller control electromagnetic valve；Multiple capillarys are equipped in the second shell and focus on pipe；It is mutually in parallel that multiple capillarys focus on pipe；The capillary, which focuses on 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 technology
Because the VOCs concentration in surrounding air is relatively low, the gas chromatograph of conventional type can not meet the detection need of benzene homologues
It asks.
Thermal desorption module is increased in our company surrounding air VOCs detecting systems, in a manner of being enriched with and concentrate, 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 detached and surveyed
It is fixed.It is sampled using large volume and compound is retained in the adsorption tube sampling pipe of high power 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 can cause final analysis result to have 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 power capacity, accuracy
It is less desirable.
Invention content
It can secondary parsing raising the technical problem to be solved by the present invention for the above-mentioned state of the art is to provide one kind
The Thermal desorption module of accuracy.
Technical solution is used by the present invention solves above-mentioned technical problem：
A kind of Thermal desorption module of secondary parsing, including first shell and second shell, it is characterised in that：The first shell
Body 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 passes through electromagnetic valve and air compressor
Connection, the other end couple with pipeline；Inside the air compressor pressure monitor is equipped with adsorption tube coupled position；The pressure
The connection of power monitor has controller；The switch of the controller control electromagnetic valve；Multiple capillarys are equipped in the second shell
Focus on pipe；It is mutually in parallel that multiple capillarys focus on pipe；The capillary, which focuses on the connection of pipe one end, pipeline, and the other end extends
Second shell external connection is connected to gas-chromatography.
Further, the adsorption tube and capillary focus on 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.
The beneficial effects of the invention are as follows：Preset pressure value in the controller, air compressor compressed air, pressure monitor
Monitor pressure, and by real-time data transmission to controller, after pressure value is reached, controller opening electromagnetic valve, ensure 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 chromatographic column is entered
Air is balanced, with ensure each admission pressure as close possible to.The enrichment parsing of pipe two level is focused on 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
It can obtain sharp compound peak shape.Capillary focuses on the interference that Manifold technology avoids water, enhances the analysis of polar compound.
Description of the drawings
Fig. 1 is the structure diagram of the present 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 are coupled by pipeline；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 are equipped in the second shell 6 and focus on pipe 8；It is mutually in parallel that multiple capillarys focus on 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 on 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.
The beneficial effects of the invention are as follows：Preset pressure value in the controller, air compressor compressed air, pressure monitor
Monitor pressure, and by real-time data transmission to controller, after pressure value is reached, controller opening electromagnetic valve, ensure 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 chromatographic column is entered
Air is balanced, with ensure each admission pressure as close possible to.The enrichment parsing of pipe two level is focused on 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
It can obtain sharp compound peak shape.Capillary focuses on 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 the protection of the present 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 housing（1）And second shell（6）Coupled by pipeline；The first shell（1）It is interior to be equipped with adsorption tube（2）；The first shell
Body（1）Side is equipped with air inlet（5）；The first shell（1）Interior air inlet（5）Position is equipped with air compressor（4）；The suction
Attached pipe（2）One end passes through electromagnetic valve（3）With air compressor（4）Connection, the other end couple with pipeline；The air compressor
（4）Internal and adsorption tube（2）Coupled position is equipped with pressure monitor（7）；The pressure monitor（7）Connection has controller；Institute
State controller control electromagnetic valve（3）Switch；The second shell（6）It is interior to be equipped with multiple capillarys focusing pipe（8）；It is multiple described
Capillary focuses on pipe（8）It is mutually in parallel；The capillary focuses on pipe（8）One end connection has 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）Empire silk is wound with 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）With
Second shell（6）For stainless steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721695228.2U CN207472838U (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 |
|---|---|---|---|
| CN201721695228.2U CN207472838U (en) | 2017-12-08 | 2017-12-08 | A kind of Thermal desorption module of secondary parsing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207472838U true CN207472838U (en) | 2018-06-08 |
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ID=62257196
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721695228.2U Expired - Fee Related CN207472838U (en) | 2017-12-08 | 2017-12-08 | A kind of Thermal desorption module of secondary parsing |
Country Status (1)
| Country | Link |
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| CN (1) | CN207472838U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109030679A (en) * | 2018-07-19 | 2018-12-18 | 浙江赛鹭鑫仪器有限公司 | A kind of second level pyrolysis analysis system |
-
2017
- 2017-12-08 CN CN201721695228.2U patent/CN207472838U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109030679A (en) * | 2018-07-19 | 2018-12-18 | 浙江赛鹭鑫仪器有限公司 | A kind of second level pyrolysis analysis system |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180608 Termination date: 20201208 |
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| CF01 | Termination of patent right due to non-payment of annual fee |