CN202421146U - Thermal desorption gas production device - Google Patents
Thermal desorption gas production device Download PDFInfo
- Publication number
- CN202421146U CN202421146U CN2012200529505U CN201220052950U CN202421146U CN 202421146 U CN202421146 U CN 202421146U CN 2012200529505 U CN2012200529505 U CN 2012200529505U CN 201220052950 U CN201220052950 U CN 201220052950U CN 202421146 U CN202421146 U CN 202421146U
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- Prior art keywords
- thermal desorption
- pipeline
- gas production
- gas
- production device
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Abstract
The utility model relates to a thermal desorption gas production device which comprises a thermal desorption furnace. An injector for gas production is arranged at the gas production end of the thermal desorption furnace; the gas inlet end of the thermal desorption furnace is connected with a nitrogen source by a pipeline; and an electromagnetic valve is arranged on the pipeline. The thermal desorption gas production device has simple structure; the gas inlet end of the thermal desorption furnace is connected with the nitrogen source by the pipeline, so that a volatile organic compound to be measured is exhausted out of the injector by filling nitrogen into the thermal desorption furnace; the electromagnetic valve is arranged on the pipeline so as to control on-off of the nitrogen. The thermal desorption gas production device is convenient to operate.
Description
Technical field
The utility model relates to a kind of air detection technical field, is specifically related to a kind of thermal desorption gas producing device.
Background technology
Gas chromatograph is a kind of visual plant that gaseous sample detects, and especially complicated to material composition, the rare gaseous sample of content are like airborne harmful gas after the building construction indoor decoration etc.
But,, could satisfy the requirement of standard test method so must carry out the concentrated sample introduction analysis to the pollutant component in the surrounding air owing to receive the restriction of gas chromatograph minimum detectable concentration up till now.Thermal desorption device is exactly a kind of sample collecting concentration device.The method of thermal desorption is: gather gaseous sample and it is concentrated with solid adsorbent; Heating makes tested gaseous volatilization in the sample come out (desorb) again; But tested gas can not take place to decompose and can not produce gaseous compound again in the thermal desorption process, to reach the detection effect of stratographic analysis.But do not have rational thermal desorption gas producing device at present in order to accomplish the thermal desorption reaction.
The utility model content
The utility model technical matters to be solved provides a kind of thermal desorption gas producing device, and it is rational in infrastructure, can effectively gather the thermal desorption reaction and obtain tested gas, thereby eliminate defective in the above-mentioned background technology.
For solving the problems of the technologies described above, the technical scheme of the utility model is:
A kind of thermal desorption gas producing device comprises the thermal desorption stove, and the gas production end of said thermal desorption stove is provided with gas production and uses syringe, it is characterized in that, the inlet end of said thermal desorption stove utilizes pipeline to connect the nitrogen source of the gas, and said pipeline is provided with solenoid valve.
As a kind of improvement, said pipeline is provided with vapour lock.
As a kind of further improvement, said pipeline is provided with pressure maintaining valve at the upstream position of vapour lock.
As a kind of further improvement, said pipeline is provided with tensimeter between vapour lock and pressure maintaining valve.
The utility model is when work, and first adsorption tube with sample is positioned in the thermal desorption stove and heats, and VOC is heated and desorbs, and the nitrogen source of the gas can be expelled to VOC in the syringe; Air pressure for the ease of in controlling plumbing fixtures and the thermal desorption stove is provided with vapour lock on pipeline; Simultaneously, also be provided with pressure maintaining valve and tensimeter, be convenient to the air pressure in the observing system.
Owing to adopted technique scheme, the beneficial effect of the utility model is:
The thermal desorption gas producing device that the utility model provides; Simple in structure; Inlet end at the thermal desorption stove utilizes pipeline to connect the nitrogen source of the gas, through in the thermal desorption stove, feeding nitrogen VOC to be measured is expelled in the syringe, is provided with solenoid valve on the pipeline; The break-make of control nitrogen, handled easily.
The thermal desorption gas producing device that the utility model provides is provided with vapour lock, simultaneously on pipeline; Also be provided with pressure maintaining valve and tensimeter; Based on above structure, operating personnel be convenient to observe with controlling plumbing fixtures and thermal desorption stove in air pressure, be beneficial to the carrying out of thermal desorption reaction.
Description of drawings
Accompanying drawing is the utility model structural representation;
Among the figure: 1. thermal desorption stove, 2. syringe, 3. nitrogen source of the gas, 4. solenoid valve, 5. vapour lock, 6. pressure maintaining valve, 7. tensimeter.
Embodiment
For technological means, creation characteristic that the utility model is realized, reach purpose and be easy to understand understanding with effect, below in conjunction with concrete diagram, further set forth the utility model.
Shown in accompanying drawing, a kind of thermal desorption gas producing device comprises thermal desorption stove 1; The gas production end of said thermal desorption stove 1 is provided with gas production with syringe 2; It is characterized in that the inlet end of said thermal desorption stove 1 utilizes pipeline to connect nitrogen source of the gas 3, said pipeline is provided with solenoid valve 4.
In the present embodiment, said pipeline is provided with vapour lock 5, and vapour lock 5 is the air pressure in controlling plumbing fixtures and the thermal desorption stove 1 effectively.
In the present embodiment, said pipeline is provided with pressure maintaining valve 6 at the upstream position of vapour lock 5; Said pipeline is provided with tensimeter 7 between vapour lock 5 and pressure maintaining valve 6, this structure is convenient to the air pressure in the observing system, is more conducive to the carrying out of thermal desorption reaction.
Present embodiment is when work, and first adsorption tube with sample is positioned in the thermal desorption stove 1 and heats, and VOC is heated and desorbs, and nitrogen source of the gas 3 can be expelled to VOC in the syringe 2.
The utility model is not limited to above-mentioned embodiment, and all are based on the technical conceive of the utility model, and the structural improvement of having done all falls among the protection domain of the utility model.
Claims (4)
1. a thermal desorption gas producing device comprises the thermal desorption stove, and the gas production end of said thermal desorption stove is provided with gas production and uses syringe, it is characterized in that: the inlet end of said thermal desorption stove utilizes pipeline to connect the nitrogen source of the gas, and said pipeline is provided with solenoid valve.
2. a kind of thermal desorption gas producing device as claimed in claim 1, it is characterized in that: said pipeline is provided with vapour lock.
3. a kind of thermal desorption gas producing device as claimed in claim 2, it is characterized in that: said pipeline is provided with pressure maintaining valve at the upstream position of vapour lock.
4. a kind of thermal desorption gas producing device as claimed in claim 3, it is characterized in that: said pipeline is provided with tensimeter between vapour lock and pressure maintaining valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200529505U CN202421146U (en) | 2012-02-17 | 2012-02-17 | Thermal desorption gas production device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200529505U CN202421146U (en) | 2012-02-17 | 2012-02-17 | Thermal desorption gas production device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202421146U true CN202421146U (en) | 2012-09-05 |
Family
ID=46745899
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200529505U Expired - Fee Related CN202421146U (en) | 2012-02-17 | 2012-02-17 | Thermal desorption gas production device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202421146U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105229451A (en) * | 2013-05-23 | 2016-01-06 | 木村光照 | The hydrogen gas sensor with concentrating function and the hydrogen gas sensor probe wherein used |
-
2012
- 2012-02-17 CN CN2012200529505U patent/CN202421146U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105229451A (en) * | 2013-05-23 | 2016-01-06 | 木村光照 | The hydrogen gas sensor with concentrating function and the hydrogen gas sensor probe wherein used |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120905 Termination date: 20200217 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |