CN201555747U - Air seal device for eliminating sampling dead volume of gas sampling bag - Google Patents
Air seal device for eliminating sampling dead volume of gas sampling bag Download PDFInfo
- Publication number
- CN201555747U CN201555747U CN2009202099069U CN200920209906U CN201555747U CN 201555747 U CN201555747 U CN 201555747U CN 2009202099069 U CN2009202099069 U CN 2009202099069U CN 200920209906 U CN200920209906 U CN 200920209906U CN 201555747 U CN201555747 U CN 201555747U
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- CN
- China
- Prior art keywords
- gas
- sampling bag
- gas sampling
- dead volume
- sampling
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Sampling And Sample Adjustment (AREA)
Abstract
The utility model relates to gas analysis, in particular to a gas sampling bag, and provides an air seal device for eliminating sampling dead volume of the gas sampling bag. The air seal device comprises a double-head gas needle with a seal plug sleeved in the middle part, and the seal plug and the caliber of the branch pipe of the gas sampling bag are matched. The device can repel air in the branch pipe, thereby reducing the influence of the air to the analysis result and avoiding the virtual-high analysis result.
Description
Technical field
The utility model relates to gas analysis, relates in particular to a kind of gas sampling bag.
Background technology
Along with progressively going deep into of energy-saving and emission-reduction strategy; the importance that the component of all gases detects day by day highlights: the component of various combustion gas and calorific value are data indispensable in the energy-conservation audit; micro-oxygen content in the various nitrogen hydrogen protection gas directly influences product quality; the calorific value analysis of mixed gas, detection of trace amount of foreign gas etc. in the silicon steel ammonia.Some microcomponent is analyzed as micro amount of oxygen and trace nitrogen detect and gas sampling required very high, because the content of nitrogen and oxygen is all very high in the air, will influence very big to the result so leak some air.Gas sampling is the most important thing of gas analysis, and the quality of gas sampling bag directly has influence on the accuracy of gas sampling.
Yet find that in actual detected used sampler bag exists the defective in the design, dead volume is arranged during sampling.As shown in Figure 1, even screw airtight valve after vacuumizing before the sampling, the arm of airtight valve still is exposed in the air, and the inside has been full of air.During sampling, the air in the arm can be brought into the gas sampling bag by sample gas, and analysis result is produced very big influence.During as micro amount of oxygen in detecting silicon steel nitrogen hydrogen protection gas, the analysis result of oxygen is compared all higher with its on-line instrument.
Summary of the invention
The utility model is intended to address the aforementioned drawbacks, and a kind of gas check that the gas sampling bag is gathered dead volume of removing is provided.The utility model can be driven away the air in the arm, reduces the influence to analysis result, avoids the virtual height of analysis result.
The utility model is achieved in that a kind of gas check of removing gas sampling bag sampling dead volume, and it comprises that a middle part is with the double end air tube of sealing-plug; The branch diameter of described sealing-plug and described gas sampling bag matches.
Simple, convenient, the easy row of the utility model does not need complicated operations just can eliminate the dead volume of gas sampling bag valve.Can be connected on during use on original gas sampling bag valve and operate, the gas sampling bag that need not to update has been saved cost.
Description of drawings
Below, further specify embodiment of the present utility model in conjunction with the accompanying drawings:
Fig. 1 is the utility model pre-blowing view;
Fig. 2 is the utility model sample states synoptic diagram.
Dotted arrow is illustrated as gas conduct route and direction among the figure.
Embodiment
As depicted in figs. 1 and 2: a kind of gas check of removing gas sampling bag sampling dead volume, it comprises that a middle part is with the double end air tube 2 of sealing-plug 1; The branch diameter 4 of described sealing-plug 1 and described gas sampling bag matches.
During use, use sample gas prepurge valve 3 before officially drawn sample, this gas check of precession is isolated fully with valve 3 and air then with sample gas generation gradually for the air that will be present in valve 3 dead volume places, valve 3 officially drawn samples of outwarding winding this moment.
Claims (1)
1. a gas check of removing gas sampling bag sampling dead volume is characterized in that it comprises that a middle part is with the double end air tube of sealing-plug; The branch diameter of described sealing-plug and described gas sampling bag matches.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202099069U CN201555747U (en) | 2009-09-22 | 2009-09-22 | Air seal device for eliminating sampling dead volume of gas sampling bag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202099069U CN201555747U (en) | 2009-09-22 | 2009-09-22 | Air seal device for eliminating sampling dead volume of gas sampling bag |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201555747U true CN201555747U (en) | 2010-08-18 |
Family
ID=42615435
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202099069U Expired - Fee Related CN201555747U (en) | 2009-09-22 | 2009-09-22 | Air seal device for eliminating sampling dead volume of gas sampling bag |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201555747U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108051285A (en) * | 2017-12-15 | 2018-05-18 | 宁波环测实验器材有限公司 | A kind of sack method VOC pretreating devices and its application method |
-
2009
- 2009-09-22 CN CN2009202099069U patent/CN201555747U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108051285A (en) * | 2017-12-15 | 2018-05-18 | 宁波环测实验器材有限公司 | A kind of sack method VOC pretreating devices and its application method |
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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: 20100818 Termination date: 20150922 |
|
| EXPY | Termination of patent right or utility model |