CN202720216U - Quantitative and constant-temperature sample feeding device of gas chromatograph - Google Patents
Quantitative and constant-temperature sample feeding device of gas chromatograph Download PDFInfo
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- CN202720216U CN202720216U CN 201220345805 CN201220345805U CN202720216U CN 202720216 U CN202720216 U CN 202720216U CN 201220345805 CN201220345805 CN 201220345805 CN 201220345805 U CN201220345805 U CN 201220345805U CN 202720216 U CN202720216 U CN 202720216U
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Abstract
The utility model relates to a quantitative and constant-temperature sample feeding device of a gas chromatograph, which serves as an auxiliary device for component analysis of gas samples and belongs to the technical field of a chemical analysis instrument for industrial natural gas. On the basis of the existing quantitative device, the sample feeding device is connected with a six-way valve for controlling sample feeding amount and a constant-temperature pipeline for guaranteeing a temperature factor in series, so that the samples can be fed at precise quantification and a sample feeding temperature is not influenced by an external temperature on the premise of not influencing experiment conditions. Therefore, the purity of the samples and the precision of quantification are guaranteed, the influences of the external temperature are alleviated, and the accuracy and the precision of experiments are improved. The quantitative and constant-temperature sample feeding device has a simple structure and is very high in practical applicability.
Description
Technical field
The utility model relates to a kind of gas chromatograph quantitative constant-temperature sampling device, is used for the component analysis servicing unit to gaseous sample, belongs to gas industry aerochemistry technical field of analytical instruments.
Background technology
In the gas industry aerochemistry is analyzed, need gaseous sample is carried out the component analysis test.Comprise that hydrocarbon gas detects and minute hydrocarbon gas detects.The sampling device that existing analytical test adopts gas chromatograph and is mated, the gas chromatograph sampling device is made of the carrier gas pipe of carrier gas sampling valve, tensimeter, carrier gas processor, the vaporizer with injection port, carrier gas vent valve and successively connection, adopt manual injection's syringe to inject from injection port tested gaseous sample during test, this sampling device is simple to operate flexibly, be widely used, but have that quantitative error is large, a repeated equal error that the recoil of sub-sampling sample and seepage entrained air etc. cause.
Summary of the invention
The purpose of this utility model provides a kind of gas chromatograph quantitative constant-temperature sampling device, solves
The situations such as the existing existing quantitative sample injection error of gas chromatograph sampling device is large realize under the prerequisite that guarantees the constant and former instrument normal operation of Primordial Qi sample acquisition mode, reduce the impact of sample introduction error and external factor, improve accuracy and the precision of experiment.
The purpose of this utility model is achieved through the following technical solutions, a kind of gas chromatograph quantitative constant-temperature sampling device, comprise carrier gas sampling valve, tensimeter, carrier gas processor, the vaporizer with injection port, carrier gas vent valve and the carrier gas pipe that connects successively, it is characterized in that, in connecting the carrier gas pipe of carrier gas processor and vaporizer, be connected in series Constant-temp. pipeline, in Constant-temp. pipeline, be connected in series six-way valve, the external constant temperature heating device of the heating in the Constant-temp. pipeline.
The carrier gas inlet of described six-way valve connects the Constant-temp. pipeline of carrier gas processor end, and the carrier gas outlet of six-way valve connects the Constant-temp. pipeline of vaporizer end.
The temperature range of Constant-temp. pipeline is 43～47 °.
Quantitative ring body in the six-way valve is long-pending to be 0.3～1ml.
The utility model is at the six-way valve of the basis of existing proportioning device serial connection control sample size and guarantee the Constant-temp. pipeline of temperature factor, thereby realizes under the prerequisite that does not affect experiment condition the accurate quantification sample introduction and guarantee that the sample introduction temperature is not subjected to external environment influence.Guarantee the purity of sample and quantitative accuracy, reduced extraneous thermal effect, improved accuracy and the precision of experiment.The utility model is simple in structure, has very strong practicality.
Description of drawings
Fig. 1 is the utility model structural representation;
Fig. 2 is six-way valve standby condition schematic diagram in the utility model;
Fig. 3 is six-way valve sample introduction view in the utility model;
Among the figure, 1 carrier gas sampling valve, 2 tensimeters, 3 carrier gas processors, 4 injection ports, 5 carrier gas vent valves, 6 Constant-temp. pipelines, 7 six-way valves, 8 quantitatively encircle, 9 sample gas entrances, the outlet of 10 sample gas, 11 carrier gas inlets, 12 carrier gas outlet, 13 carrier gas pipes, 14 vaporizers.
Embodiment
Further specify in conjunction with the accompanying drawings and embodiments the utility model, as shown in Figure 1, the utility model is by carrier gas sampling valve 1, tensimeter 2, carrier gas processor 3, the vaporizer 14 with injection port 4, carrier gas vent valve 5, the carrier gas pipe 13 that connects carrier gas sampling valve 1, tensimeter 2, carrier gas processor 3, vaporizer 14, carrier gas vent valve 5, connect the Constant-temp. pipeline 6 that is connected in series in the carrier gas pipe 13 of carrier gas processor 3 and vaporizer 14, the six-way valve of serial connection consists of in Constant-temp. pipeline 6, the external constant temperature heating device of the heating in the Constant-temp. pipeline 6.The utility model has kept the vaporizer 14 with injection port 4.Six-way valve 7 in the utility model can be from market purchasing, and shown in Fig. 2,3, six-way valve 7 has two states, and during standby condition, sample gas sample enters quantitative ring 8, can guarantee the accuracy of sample destiny amount, can guarantee that also gas is not by air pollution; During the sample introduction state, gas of carrier gas enters quantitative ring 8 and enters vaporizer 14 entrances with sample gas.During work, six-way valve 7 at first is in standby condition, and the sample gas entrance 9 with gas inject six-way valve 7 transfers to the sample introduction state fast with six-way valve 7 afterwards, and carrier gas enters vaporizer 14 with sample gas.The utility model is that former sample introduction carrier gas pipe 13 is being advanced vaporizer 14 front disconnections, adjunction six-way valve 7 and Constant-temp. pipeline 6, kept former sampling system, increased six-way valve quantitative constant-temperature sample introduction, both can use the syringe sample introduction, also can take a sample from gas cylinder, entrained gas is few, error is little, favorable reproducibility.
In the utility model, six-way valve is selected the high-quality six-way valve that volume is little, impermeability is good; Quantitatively ring 8 employing volumes are 0.3ml, 1ml for subsequent use; Constant temperature heating device holding temperature scope is 43～47 °, and the best is 45 ℃, and Constant-temp. pipeline 6 can be from market purchasing.
Claims (4)
1. gas chromatograph quantitative constant-temperature sampling device, comprise carrier gas sampling valve, tensimeter, carrier gas processor, injection port, carrier gas vent valve and the carrier gas pipe that connects successively, it is characterized in that, in connecting the carrier gas pipe of carrier gas processor and injection port, be connected in series Constant-temp. pipeline, in Constant-temp. pipeline, be connected in series six-way valve, the external constant temperature heating device of the heating in the Constant-temp. pipeline.
2. gas chromatograph quantitative constant-temperature sampling device according to claim 1 is characterized in that, the carrier gas inlet of described six-way valve connects the Constant-temp. pipeline of carrier gas processor end, and the carrier gas outlet of six-way valve connects the Constant-temp. pipeline of injection port end.
3. gas chromatograph quantitative constant-temperature sampling device according to claim 1 is characterized in that, the temperature range of Constant-temp. pipeline is 43～47 °.
4. gas chromatograph quantitative constant-temperature sampling device according to claim 1 is characterized in that, the quantitative ring body in the six-way valve is long-pending to be 0.3～1ml.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220345805 CN202720216U (en) | 2012-07-17 | 2012-07-17 | Quantitative and constant-temperature sample feeding device of gas chromatograph |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220345805 CN202720216U (en) | 2012-07-17 | 2012-07-17 | Quantitative and constant-temperature sample feeding device of gas chromatograph |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202720216U true CN202720216U (en) | 2013-02-06 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220345805 Expired - Fee Related CN202720216U (en) | 2012-07-17 | 2012-07-17 | Quantitative and constant-temperature sample feeding device of gas chromatograph |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202720216U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103471877A (en) * | 2013-09-29 | 2013-12-25 | 中国寰球工程公司 | System for sampling and component analysis of natural gas generated after absorption tower deacidification |
-
2012
- 2012-07-17 CN CN 201220345805 patent/CN202720216U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103471877A (en) * | 2013-09-29 | 2013-12-25 | 中国寰球工程公司 | System for sampling and component analysis of natural gas generated after absorption tower deacidification |
| CN103471877B (en) * | 2013-09-29 | 2016-09-28 | 中国寰球工程公司 | Natural gas sampling after the deacidification of a kind of absorption tower and component analysis system |
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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: 20130206 Termination date: 20160717 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |