CN217084836U - A pipeline structure that is used for chromatographic analyzer to advance appearance, blows appearance - Google Patents
A pipeline structure that is used for chromatographic analyzer to advance appearance, blows appearance Download PDFInfo
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- CN217084836U CN217084836U CN202122739012.4U CN202122739012U CN217084836U CN 217084836 U CN217084836 U CN 217084836U CN 202122739012 U CN202122739012 U CN 202122739012U CN 217084836 U CN217084836 U CN 217084836U
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Abstract
The application discloses a pipeline structure for sample introduction and sample blowing of a chromatographic analyzer, which is characterized by comprising an inlet pipeline and an outlet pipeline, wherein the inlet pipeline is connected to a sample inlet of the chromatographic analyzer; the sample injection control valve and the sample blowing control valve are both connected to the controller and controlled to be opened or closed by the controller.
Description
Technical Field
The application relates to a pipeline structure for sampling and blowing samples of a chromatographic analyzer, and belongs to the technical field of chromatographic analyzers.
Background
The chromatographic analyzer is used for gas chromatography analysis of liquid, gas or a mixture of gas, liquid and solid particles, a sampling valve of the traditional chromatographic analyzer is generally provided with a sample inlet, a sample outlet, a carrier gas inlet and a carrier gas outlet, and a quantitative pipe and a matched pipeline for chromatographic analysis are arranged in the machine; because the material, structure, temperature, sample introduction amount, sample introduction speed and the like of sample introduction can directly influence the repeatability and accuracy of qualitative and quantitative analysis of gas chromatography, in actual analysis, the gas, liquid, solid and state of a sample are different, the analysis purposes are different, and the characteristics of high temperature and high pressure, particles, chemical compatibility and the like of a process sample are involved, if sample residues exist in a pipeline, on one hand, the subsequent analysis is easily influenced, on the other hand, a sampling valve and an internal pipeline can be corroded, and the repeatability and stability of a chromatographic analyzer is seriously influenced.
SUMMERY OF THE UTILITY MODEL
The technical problem that this application will be solved is the remaining problem of sample in the chromatographic analyzer sample pipeline.
In order to solve the technical problem, the technical scheme of the application provides a pipeline structure for sample introduction and sample blowing of a chromatographic analyzer, which is characterized by comprising an inlet pipeline and an outlet pipeline, wherein the inlet pipeline is connected to a sample inlet of the chromatographic analyzer; the sample injection control valve and the sample blowing control valve are both connected to the controller and controlled to be opened or closed by the controller.
Preferably, the blowing end comprises a gas cylinder and a pressure reducing valve arranged at an outlet of the gas cylinder.
Preferably, the gas cylinder is a nitrogen gas cylinder.
Preferably, the blowing end is a blower
This application advantage lies in, through blowing a kind system for chromatographic analyzer increases, blows the appearance when the chromatographic analyzer need not to advance the appearance, with probably remaining liquid, solid particulate matter, gaseous sanitization in the chromatographic analyzer, the reliability and stability of the system of improvement has ensured follow-up measuring result's accuracy, and the maintenance volume of system has significantly reduced to the corruption harm of equipment of residue avoided simultaneously.
Drawings
FIG. 1 is a schematic diagram of a sample injection and blowing pipeline structure for a chromatographic analyzer in an embodiment;
reference numerals: carrier gas inlet 11, carrier gas outlet 12, dosing pipe 13, inlet pipeline 14, outlet pipeline 15, gas cylinder 21, pressure reducing valve 22, sample blowing control valve 23, sample injection control valve 24, sample end 25 and controller 26.
Detailed Description
In order to make the present application more comprehensible, preferred embodiments are described in detail below with reference to the accompanying drawings.
The chromatographic analyzer is used for gas chromatography analysis of liquid, gas or a mixture of gas, liquid and solid particles, a sampling valve of the traditional chromatographic analyzer is generally provided with a sample inlet, a sample outlet, a carrier gas inlet 11 and a carrier gas outlet 12, and a quantitative pipe 13 and a matched pipeline for chromatographic analysis are arranged in the machine; because the material, structure, temperature, sample introduction amount, sample introduction speed and the like of sample introduction can directly influence the repeatability and accuracy of qualitative and quantitative analysis of gas chromatography, in actual analysis, the gas, liquid, solid and state of a sample are different, the analysis purposes are different, and the characteristics of high temperature and high pressure, particles, chemical compatibility and the like of a process sample are involved, if sample residues exist in a pipeline, on one hand, the subsequent analysis is easily influenced, on the other hand, a sampling valve and an internal pipeline can be corroded, and the repeatability and stability of a chromatographic analyzer is seriously influenced.
The embodiment provides a pipeline structure for sample injection and sample blowing of a chromatographic analyzer, and mainly aims to eliminate the influence of sample residues on the repeatability and stability of the chromatographic analyzer; as shown in fig. 1, the inlet pipeline 14 is connected to a sample inlet of the chromatographic analyzer, the outlet pipeline 15 is led out from a sample outlet of the chromatographic analyzer, the chromatographic analyzer further comprises a sample introduction pipeline and a sample blowing pipeline, the sample introduction pipeline is connected to the inlet pipeline 14 from a sample end 25, a sample introduction control valve 24 is arranged on the sample introduction pipeline, the sample blowing pipeline is connected to the inlet pipeline 14 from a gas cylinder 21, and a pressure reducing valve 22 and a sample blowing control valve 23 are arranged on the sample blowing pipeline; the sample injection control valve 24 and the sample blowing control valve 23 are both connected to the controller 26 and are controlled to be opened or closed by the controller 26.
The working process that is used for the chromatographic analyzer to advance a kind, blow the pipeline structure of appearance that this embodiment provided includes kind mode and blows a kind mode, open advance a kind control valve 24 under the kind mode, close and blow a kind control valve 23, the sample gets into the sample import of chromatographic analyzer from the sample end, switch over to blowing a kind mode after advancing the kind and accomplishing, blow kind mode and close advance a kind control valve 24 down, open and blow a kind control valve 23, and open relief pressure valve 22, gaseous entering in proper order blows a kind pipeline, introduction pipeline 14, the sample import, the internal pipeline, the sample export is arranged to the external world, sweep clean with remaining sample in the pipeline.
In some possible embodiments, the gas cylinder 21 may be a nitrogen gas cylinder, or the gas cylinder 21 may be replaced with a blower.
Claims (4)
1. A pipeline structure for sample introduction and sample blowing of a chromatographic analyzer is characterized by comprising an inlet pipeline and an outlet pipeline, wherein the inlet pipeline is connected to a sample inlet of the chromatographic analyzer, the outlet pipeline is led out from a sample outlet of the chromatographic analyzer, the pipeline structure further comprises a sample introduction pipeline and a sample blowing pipeline, the sample introduction pipeline is connected to the inlet pipeline from a sample end, a sample introduction control valve is arranged on the sample introduction pipeline, the sample blowing pipeline is connected to the inlet pipeline from a gas blowing end, and a sample blowing control valve is arranged on the sample blowing pipeline; the sample injection control valve and the sample blowing control valve are both connected to the controller and controlled to be opened or closed by the controller.
2. The pipeline structure for sample injection and blowing of the chromatographic analyzer as claimed in claim 1, wherein the blowing end comprises a gas cylinder and a pressure reducing valve arranged at an outlet of the gas cylinder.
3. The pipeline structure for sample injection and sample blowing of a chromatographic analyzer as claimed in claim 2, wherein the gas cylinder is a nitrogen gas cylinder.
4. The pipeline structure for sample injection and blowing of the chromatographic analyzer as claimed in claim 1, wherein the blowing end is a blower.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122739012.4U CN217084836U (en) | 2021-11-08 | 2021-11-08 | A pipeline structure that is used for chromatographic analyzer to advance appearance, blows appearance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122739012.4U CN217084836U (en) | 2021-11-08 | 2021-11-08 | A pipeline structure that is used for chromatographic analyzer to advance appearance, blows appearance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217084836U true CN217084836U (en) | 2022-07-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122739012.4U Active CN217084836U (en) | 2021-11-08 | 2021-11-08 | A pipeline structure that is used for chromatographic analyzer to advance appearance, blows appearance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217084836U (en) |
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2021
- 2021-11-08 CN CN202122739012.4U patent/CN217084836U/en active Active
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