CN204789499U - One way autoinjection gas chromatograph - Google Patents
One way autoinjection gas chromatograph Download PDFInfo
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- CN204789499U CN204789499U CN201520488088.6U CN201520488088U CN204789499U CN 204789499 U CN204789499 U CN 204789499U CN 201520488088 U CN201520488088 U CN 201520488088U CN 204789499 U CN204789499 U CN 204789499U
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- connecting pipe
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- aspiration pump
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Abstract
The utility model belongs to the analytical instrument field especially relates to an one way autoinjection gas chromatograph, its characterized in that: the one end of crossover sub with the sampling container links to each other, the other end of crossover sub with first import of six -way valve links to each other, the carrier gas introduction port with a second import of six -way valve links to each other, the one end of ration ring with the primary outlet of six -way valve links to each other, the other end of ration ring with a third import of six -way valve links to each other, the gas chromatography post with a second export of six -way valve links to each other, the one end of flowmeter with a third export of six -way valve links to each other, the other end of flowmeter with the aspiration pump links to each other, the one end of aspiration pump is provided with the gas outlet, be provided with the timer in the control panel, the timer with the aspiration pump passes through the circuit intercommunication, the gaseous phase workstation with control panel passes through the data line intercommunication.
Description
Technical field
The utility model belongs to field of analytic instrument, particularly relates to a kind of single channel auto injection gas chromatograph.
Background technology
Because airbag (as Tedla bag) or tank (as Soviet Union's horse tank) are when gathering gaseous sample, the absolute predominance had in the stability and integrality of sample, its application in volatile organic matter monitoring is more and more extensive, especially be daily content of must surveying in fields such as environmental air quality monitoring, petrochemical complex, gas dosing, the energy and science and techniques of defence, and sample size is increasing.
Along with the fast development of Modern Analytical Instrument, vapor-phase chromatography has been widely used in the analysis of gaseous sample, corresponding various sample introduction means, as syringe direct-injection technique, six-way valve quantity tube sampling system, thermal desorption injection method, head-space sampler sampling system, purge and trap and Solid-Phase Extraction etc.And the difference of sample injection method, mode, there is obvious impact to analysis result.But in daily laboratory gas chromatographic analysis, common gas sampling mode is hand sampling.Hand sampling mode must remove fixed cycle operator sample introduction by people, and manual operation often brings certain human factor error to gas sampling, and it is bad that the inconsistent meeting as sample injection time causes gas to go out peak spectrogram repeatability, and precision is not high, poor accuracy.Manually operated gas sampling mode can not meet the needs of the gas analysis quality progressively improved.
Automatic sampling apparatus can reduce the error that manual operation produces greatly.Present automatic analytical instrument is typically equipped with automatic sampler or automatic analysing apparatus.The gas chromatograph of more typical analytical gas sample has the large-scale instrument producers such as Agilent, Shimadazu, Varian, Thermo, but the sample gathered airbag or tank is all without special automatic sampler.There is the automatic sampler of ad hoc analysis tank and Tedla bag collected specimens in Entech company, but instrument price and spare part costliness thereof.Also has the special automatic sampler for syringe collected specimens in addition, patent of invention (Main classification number: G01N35/10 (2006.01) I, classification number: G01N35/10 (2006.01) I) and ten thousand as Liu Wei, Su Hua transports the utility model patent (patent No.: 200920246652) of sails, Li Yue, high definition bamboo; Be applicable to the automatic sampler of pressure steel cylinder stock standard gas analysis, as patent of invention (Main classification number: G01N35/10 (2006.01) I of Zhou Zeyi, classification number: G01N35/10 (2006.01) IG01N30/24 (2006.01) I), but be all not suitable for the auto injection of bag or tank collected specimens.Therefore, be necessary to develop a kind of cost low, be applicable to bag or tank collected specimens and can the gas chromatograph of auto injection.
Summary of the invention
The utility model, for above-mentioned technical matters, provides the single channel auto injection gas chromatograph that a kind of cost is low, be applicable to bag or tank collected specimens.
The technical scheme that the utility model adopts is:
A kind of single channel auto injection gas chromatograph, is characterized in that: comprise sampling container, X-over, six-way valve, quantitative loop, carrier gas injection port, gas chromatographic column, flowmeter, control panel, gas phase workstation, first connecting pipe, second connecting pipe, 3rd connecting pipe, 4th connecting pipe, 5th connecting pipe, 6th connecting pipe, 7th connecting pipe, aspiration pump, one end of described X-over is connected with described sampling container, the other end of described X-over is connected with first import of described six-way valve by the first connecting pipe, described carrier gas injection port is connected with second import of described six-way valve by the second connecting pipe, one end of described quantitative loop is connected with the primary outlet of described six-way valve by the 3rd connecting pipe, the other end of described quantitative loop is connected with the 3rd import of described six-way valve by the 4th connecting pipe, described gas chromatographic column is exported by the 5th connecting pipe and described six-way valve second and is connected, one end of described flowmeter is exported by the 6th connecting pipe and described six-way valve the 3rd and is connected, the other end of described flowmeter is connected with described aspiration pump by the 7th connecting pipe, one end of described aspiration pump is provided with gas outlet, timer is provided with in described control panel, described control panel is provided with manipulation button, delay switch, described timer and described aspiration pump are by circuit communication, and described gas phase workstation is communicated with by data line with described control panel, described gas phase workstation is provided with and releases the button.
Described flow counts mass flowmeter.
Described sampling container is airbag or tank.
Described data line is 8.
The beneficial effects of the utility model are:
1, the utility model cost is low, is applicable to the gaseous sample of sampling airbag or sample can collection and can realizes auto injection, easy to install;
2, simple to operate, stable, reproducible, the accuracy of the utility model and precision high;
3, by different X-overs, the sampler bag of distinct interface or sample can are connected with sample introduction pipeline, realize the mensuration of its collected specimens;
4, by 8 position datawires, the Signal transmissions between workstation and control panel can be realized, improve the reappearance of analysis;
5, any a import or Domestic Gas Chromatograph is applicable to, applied widely;
6, do not take the injection port of gas chromatograph, take into account hand sampling.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail:
In figure, 1-sampling container, 2-X-over, 3-six-way valve, 4-quantitative loop, 5-carrier gas injection port, 6-gas chromatographic column, 7-flowmeter, 8-control panel, 9-gas phase workstation, 10-first connecting pipe, 11-second connecting pipe, 12-the 3rd connecting pipe, 13-the 4th connecting pipe, 14-the 5th connecting pipe, 15-the 6th connecting pipe, 16-the 7th connecting pipe, 17-releases the button, 18-aspiration pump, 19-gas outlet, 20-timer, 21-manipulates button, 22-delay switch, 23-data line.
Embodiment
As shown in Figure 1, a kind of single channel auto injection gas chromatograph, comprises sampling container 1, X-over 2, six-way valve 3, quantitative loop 4, carrier gas injection port 5, gas chromatographic column 6, flowmeter 7, control panel 8, gas phase workstation 9, first connecting pipe 10, second connecting pipe 11, 3rd connecting pipe 12, 4th connecting pipe 13, 5th connecting pipe 14, 6th connecting pipe 15, 7th connecting pipe 16, aspiration pump 18, one end of X-over 2 is connected with sampling container 1, the other end of X-over 2 is connected with first import of six-way valve 3 by the first connecting pipe 10, carrier gas injection port 5 is connected with second import of six-way valve 3 by the second connecting pipe 11, one end of quantitative loop 4 is connected with the primary outlet of six-way valve 3 by the 3rd connecting pipe 12, the other end of quantitative loop 4 is connected with the 3rd import of six-way valve 3 by the 4th connecting pipe 13, gas chromatographic column 6 is exported by the 5th connecting pipe 14 and six-way valve 3 second and is connected, one end of flowmeter 7 is exported by the 6th connecting pipe 15 and six-way valve 3 the 3rd and is connected, the other end of flowmeter 7 is connected with aspiration pump 18 by the 7th connecting pipe 16, one end of aspiration pump 18 is provided with gas outlet 19, timer 20 is provided with in control panel 8, control panel 8 is provided with manipulation button 21, delay switch 22, timer 20 and aspiration pump 18 are by circuit communication, and gas phase workstation 9 is communicated with by data line 23 with control panel 8, gas phase workstation 9 is provided with and releases the button 17.
Flowmeter 7 is mass flowmeter.
Sampling container 1 is airbag or tank.
Data line 23 is 8.
The gaseous sample using sampling airbag or sample can to gather in the utility model, enters gas chromatograph with stable flow, utilizes the operational process of sequence in gas chromatograph to realize the automatic collection analysis of sample.
Principle of work
The sampling container 1 that gaseous sample to be measured is housed is connected with X-over 2, X-over 2 is connected with an import of six-way valve 3 by pipeline, during collected specimens, sample is full of quantitative loop 4, during sample introduction, in quantitative loop 4, sample is brought in the analyzer such as gas chromatographic column 6 grade of gas chromatograph by carrier gas, and a gas outlet of six-way valve 3 is connected with one end of mass flowmeter; Mass flowmeter 7 mainly keeps whole air-channel system stability of flow and controls the size of its flow, ensure that sample enters the quantity tube of gas chromatograph with constant flow rate, make the pressure of gas in quantity tube by stability contorting, in quantity tube, gaseous tension and the response of flow relatively stable guarantee chromatographic signal have good repeatability; The other end of mass flowmeter connects with aspiration pump 18, manually in control panel 8, built-in timer 20 controls aspiration pump 18, to realize sample introduction programmed control analysis time, control panel 8 is connected with the gas phase workstation 9 in gas chromatography by data line 23 simultaneously, and gas phase workstation 9 sequence editting function can be analyzed by Realization analysis sampfe order sample introduction.
This gas chromatograph greatly can improve sampler bag or sample can and gather stability that gas analysis sample measures, repeatability, accuracy and security, and increase work efficiency and measuring accuracy, cost is low, and structure is simple, conveniently promotes.
Above 1 embodiment of the present utility model has been described in detail, but described content being only preferred embodiment of the present utility model, can not being considered to for limiting practical range of the present utility model.All equalizations done according to the utility model application range change and improve, and all should still belong within patent covering scope of the present utility model.
Claims (3)
1. a single channel auto injection gas chromatograph, is characterized in that: comprise sampling container, X-over, six-way valve, quantitative loop, carrier gas injection port, gas chromatographic column, flowmeter, control panel, gas phase workstation, first connecting pipe, second connecting pipe, 3rd connecting pipe, 4th connecting pipe, 5th connecting pipe, 6th connecting pipe, 7th connecting pipe, aspiration pump, one end of described X-over is connected with described sampling container, the other end of described X-over is connected with first import of described six-way valve by the first connecting pipe, described carrier gas injection port is connected with second import of described six-way valve by the second connecting pipe, one end of described quantitative loop is connected with the primary outlet of described six-way valve by the 3rd connecting pipe, the other end of described quantitative loop is connected with the 3rd import of described six-way valve by the 4th connecting pipe, described gas chromatographic column is exported by the 5th connecting pipe and described six-way valve second and is connected, one end of described flowmeter is exported by the 6th connecting pipe and described six-way valve the 3rd and is connected, the other end of described flowmeter is connected with described aspiration pump by the 7th connecting pipe, one end of described aspiration pump is provided with gas outlet, timer is provided with in described control panel, described control panel is provided with manipulation button, delay switch, described timer and described aspiration pump are by circuit communication, and described gas phase workstation is communicated with by data line with described control panel, described gas phase workstation is provided with and releases the button.
2. a kind of single channel auto injection gas chromatograph according to claim 1, is characterized in that: described flow counts mass flowmeter.
3. a kind of single channel auto injection gas chromatograph according to claim 1, is characterized in that: described sampling container is airbag or tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520488088.6U CN204789499U (en) | 2015-07-08 | 2015-07-08 | One way autoinjection gas chromatograph |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520488088.6U CN204789499U (en) | 2015-07-08 | 2015-07-08 | One way autoinjection gas chromatograph |
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| Publication Number | Publication Date |
|---|---|
| CN204789499U true CN204789499U (en) | 2015-11-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520488088.6U Expired - Fee Related CN204789499U (en) | 2015-07-08 | 2015-07-08 | One way autoinjection gas chromatograph |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106885864A (en) * | 2015-12-15 | 2017-06-23 | 中国科学院大连化学物理研究所 | The more bundles of capillaries post and flight time mass spectrum of sampling sample introduction integration are used in conjunction device |
| CN108732287A (en) * | 2018-08-08 | 2018-11-02 | 成都科林分析技术有限公司 | A kind of thermal desorption gas sample injection device and method |
-
2015
- 2015-07-08 CN CN201520488088.6U patent/CN204789499U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106885864A (en) * | 2015-12-15 | 2017-06-23 | 中国科学院大连化学物理研究所 | The more bundles of capillaries post and flight time mass spectrum of sampling sample introduction integration are used in conjunction device |
| CN108732287A (en) * | 2018-08-08 | 2018-11-02 | 成都科林分析技术有限公司 | A kind of thermal desorption gas sample injection device and method |
| CN108732287B (en) * | 2018-08-08 | 2024-01-12 | 成都科林分析技术有限公司 | Thermal desorption gas sampling device and 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: 20151118 Termination date: 20160708 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |